{
    "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-2026-27971",
        "tracking": {
            "current_release_date": "2026-04-01T18:48:11.069615Z",
            "generator": {
                "date": "2026-02-17T15:00:00Z",
                "engine": {
                    "name": "V.E.L.M.A",
                    "version": "1.7"
                }
            },
            "id": "CVE-2026-27971",
            "initial_release_date": "2026-03-02T22:40:39.297009Z",
            "revision_history": [
                {
                    "date": "2026-03-02T22:40:39.297009Z",
                    "number": "1",
                    "summary": "CVE created.| Source created.| CVE status created. (valid)| Description created for source.| CVSS created.| References created (3).| CWES updated (1)."
                },
                {
                    "date": "2026-03-02T22:40:46.055498Z",
                    "number": "2",
                    "summary": "NCSC Score created."
                },
                {
                    "date": "2026-03-03T23:25:17.197505Z",
                    "number": "3",
                    "summary": "Source created.| CVE status created. (valid)| Description created for source.| CVSS created.| References created (1).| CWES updated (1)."
                },
                {
                    "date": "2026-03-03T23:25:27.924995Z",
                    "number": "4",
                    "summary": "NCSC Score updated."
                },
                {
                    "date": "2026-03-03T23:38:49.797292Z",
                    "number": "5",
                    "summary": "Source created.| CVE status created. (valid)| Description created for source.| CVSS created.| Products created (1).| References created (1).| CWES updated (1)."
                },
                {
                    "date": "2026-03-03T23:38:58.979212Z",
                    "number": "6",
                    "summary": "NCSC Score updated."
                },
                {
                    "date": "2026-03-04T02:39:44.596856Z",
                    "number": "7",
                    "summary": "References created (1)."
                },
                {
                    "date": "2026-03-04T07:35:11.593687Z",
                    "number": "8",
                    "summary": "NCSC Score updated."
                },
                {
                    "date": "2026-03-04T15:16:38.842990Z",
                    "number": "9",
                    "summary": "Source created.| CVE status created. (valid)| EPSS created."
                },
                {
                    "date": "2026-03-04T15:16:42.331552Z",
                    "number": "10",
                    "summary": "NCSC Score updated."
                },
                {
                    "date": "2026-03-04T16:39:01.439887Z",
                    "number": "11",
                    "summary": "Unknown change."
                },
                {
                    "date": "2026-03-04T18:21:20.810770Z",
                    "number": "12",
                    "summary": "Source created.| CVE status created. (valid)| Description created for source.| CVSS created.| Products created (1).| References created (3).| CWES updated (1)."
                },
                {
                    "date": "2026-03-04T18:21:27.632773Z",
                    "number": "13",
                    "summary": "NCSC Score updated."
                },
                {
                    "date": "2026-03-05T18:25:18.294818Z",
                    "number": "14",
                    "summary": "CVSS created.| Products created (1).| Product Identifiers created (1)."
                },
                {
                    "date": "2026-03-05T18:25:20.973887Z",
                    "number": "15",
                    "summary": "NCSC Score updated."
                },
                {
                    "date": "2026-03-06T14:54:02.492891Z",
                    "number": "16",
                    "summary": "EPSS updated."
                },
                {
                    "date": "2026-03-06T14:54:09.365987Z",
                    "number": "17",
                    "summary": "NCSC Score updated."
                },
                {
                    "date": "2026-03-09T06:00:48.887859Z",
                    "number": "18",
                    "summary": "Source created.| CVE status created. (valid)| Description created for source.| CVSS created.| Exploits created (1).| References created (2).| CWES updated (1)."
                },
                {
                    "date": "2026-03-09T06:00:50.739821Z",
                    "number": "19",
                    "summary": "Description removed for source.| Description created for source."
                },
                {
                    "date": "2026-03-09T06:00:57.571087Z",
                    "number": "20",
                    "summary": "NCSC Score updated."
                },
                {
                    "date": "2026-03-10T14:23:47.936627Z",
                    "number": "21",
                    "summary": "EPSS updated."
                },
                {
                    "date": "2026-03-10T14:23:53.746524Z",
                    "number": "22",
                    "summary": "NCSC Score updated."
                },
                {
                    "date": "2026-03-20T09:39:13.158214Z",
                    "number": "23",
                    "summary": "Source connected.| CVE status created. (valid)| EPSS created."
                },
                {
                    "date": "2026-03-20T09:39:15.334028Z",
                    "number": "24",
                    "summary": "NCSC Score updated."
                },
                {
                    "date": "2026-03-21T15:31:35.108188Z",
                    "number": "25",
                    "summary": "EPSS updated."
                },
                {
                    "date": "2026-03-21T15:31:38.711800Z",
                    "number": "26",
                    "summary": "NCSC Score updated."
                },
                {
                    "date": "2026-03-29T00:48:30.273742Z",
                    "number": "27",
                    "summary": "EPSS updated."
                },
                {
                    "date": "2026-03-29T00:48:35.985004Z",
                    "number": "28",
                    "summary": "NCSC Score updated."
                },
                {
                    "date": "2026-04-01T18:48:00.681067Z",
                    "number": "29",
                    "summary": "Source created.| CVE status created. (valid)| Description created for source.| CVSS created.| Products created (2).| References created (5).| CWES updated (1)."
                },
                {
                    "date": "2026-04-01T18:48:02.906065Z",
                    "number": "30",
                    "summary": "NCSC Score updated."
                }
            ],
            "status": "interim",
            "version": "30"
        }
    },
    "product_tree": {
        "branches": [
            {
                "branches": [
                    {
                        "branches": [
                            {
                                "category": "product_version_range",
                                "name": "vers:unknown/>=0|<1.19.1",
                                "product": {
                                    "name": "vers:unknown/>=0|<1.19.1",
                                    "product_id": "CSAFPID-5759007"
                                }
                            }
                        ],
                        "category": "product_name",
                        "name": "@builder.io/qwik"
                    },
                    {
                        "branches": [
                            {
                                "category": "product_version_range",
                                "name": "vers:unknown/1.19.1",
                                "product": {
                                    "name": "vers:unknown/1.19.1",
                                    "product_id": "CSAFPID-5982421"
                                }
                            },
                            {
                                "category": "product_version_range",
                                "name": "vers:unknown/<1.19.1",
                                "product": {
                                    "name": "vers:unknown/<1.19.1",
                                    "product_id": "CSAFPID-5982422"
                                }
                            }
                        ],
                        "category": "product_name",
                        "name": "npm/@builder.io/qwik"
                    },
                    {
                        "branches": [
                            {
                                "category": "product_version_range",
                                "name": "vers:unknown/<1.19.1",
                                "product": {
                                    "name": "vers:unknown/<1.19.1",
                                    "product_id": "CSAFPID-5757214"
                                }
                            }
                        ],
                        "category": "product_name",
                        "name": "qwik"
                    }
                ],
                "category": "vendor",
                "name": "QwikDev"
            },
            {
                "branches": [
                    {
                        "branches": [
                            {
                                "category": "product_version_range",
                                "name": "vers:unknown/<1.19.1",
                                "product": {
                                    "name": "vers:unknown/<1.19.1",
                                    "product_id": "CSAFPID-5763317",
                                    "product_identification_helper": {
                                        "cpe": "cpe:2.3:a:qwik:qwik:*:*:*:*:*:node.js:*:*"
                                    }
                                }
                            }
                        ],
                        "category": "product_name",
                        "name": "qwik"
                    }
                ],
                "category": "vendor",
                "name": "qwik"
            }
        ]
    },
    "vulnerabilities": [
        {
            "cve": "CVE-2026-27971",
            "cwe": {
                "id": "CWE-502",
                "name": "Deserialization of Untrusted Data"
            },
            "notes": [
                {
                    "category": "description",
                    "text": "### Summary\nqwik <=1.19.0 is vulnerable to RCE due to an unsafe deserialization vulnerability in the `server$` RPC mechanism that allows any unauthenticated user to execute arbitrary code on the server with a single HTTP request. Affects any deployment where `require()` is available at runtime.\n\n### Impact\n- Remote Code Execution",
                    "title": "github - https://github.com/advisories/GHSA-p9x5-jp3h-96mm"
                },
                {
                    "category": "description",
                    "text": "Qwik is a performance focused javascript framework. qwik <=1.19.0 is vulnerable to RCE due to an unsafe deserialization vulnerability in the server$ RPC mechanism that allows any unauthenticated user to execute arbitrary code on the server with a single HTTP request. Affects any deployment where require() is available at runtime. This vulnerability is fixed in 1.19.1.",
                    "title": "nvd - https://nvd.nist.gov/vuln/detail/CVE-2026-27971"
                },
                {
                    "category": "description",
                    "text": "Qwik is a performance focused javascript framework. qwik <=1.19.0 is vulnerable to RCE due to an unsafe deserialization vulnerability in the server$ RPC mechanism that allows any unauthenticated user to execute arbitrary code on the server with a single HTTP request. Affects any deployment where require() is available at runtime. This vulnerability is fixed in 1.19.1.",
                    "title": "cveprojectv5 - https://www.cve.org/CVERecord?id=CVE-2026-27971"
                },
                {
                    "category": "description",
                    "text": "### Summary\nqwik <=1.19.0 is vulnerable to RCE due to an unsafe deserialization vulnerability in the `server$` RPC mechanism that allows any unauthenticated user to execute arbitrary code on the server with a single HTTP request. Affects any deployment where `require()` is available at runtime.\n\n### Impact\n- Remote Code Execution",
                    "title": "osv - https://www.googleapis.com/download/storage/v1/b/osv-vulnerabilities/o/npm%2FGHSA-p9x5-jp3h-96mm.json?alt=media"
                },
                {
                    "category": "description",
                    "text": "Qwik <= 1.19.0 is vulnerable to RCE due to unsafe deserialization in the\nserver$ RPC mechanism. The importSymbol function in the server platform\nfalls back to require() with user-controlled paths from QRL objects,\nallowing unauthenticated attackers to load arbitrary Node.js modules and\nexecute code with a single HTTP POST request.\n",
                    "title": "nucleitemplates - https://github.com/projectdiscovery/nuclei-templates/blob/main/http/cves/2026/CVE-2026-27971.yaml"
                },
                {
                    "category": "description",
                    "text": "qwik <=1.19.0 is vulnerable to RCE due to an unsafe deserialization vulnerability in the `server$` RPC mechanism that allows any unauthenticated user to execute arbitrary code on the server with a single HTTP request. Affects any deployment where `require()` is available at runtime.",
                    "title": "gitlab - https://gitlab.com/api/v4/projects/25847700/repository/files/npm%2F@builder.io%2Fqwik%2FCVE-2026-27971.yml/raw"
                },
                {
                    "category": "other",
                    "text": "0.23118",
                    "title": "EPSS"
                },
                {
                    "category": "other",
                    "text": "CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N",
                    "title": "CVSSV4"
                },
                {
                    "category": "other",
                    "text": "9.2",
                    "title": "CVSSV4 base score"
                },
                {
                    "category": "other",
                    "text": "4.0",
                    "title": "NCSC Score"
                },
                {
                    "category": "other",
                    "text": "There is product data available from source Nvd, The value of the most recent EPSS score",
                    "title": "NCSC Score top increasing factors"
                },
                {
                    "category": "other",
                    "text": "Is related to (a version of) an uncommon product, Exploit code publicly available, Is related to an uncommon product vendor, Is related to CWE-502 (Deserialization of Untrusted Data)",
                    "title": "NCSC Score top decreasing factors"
                }
            ],
            "product_status": {
                "fixed": [
                    "CSAFPID-5982421"
                ],
                "known_affected": [
                    "CSAFPID-5757214",
                    "CSAFPID-5759007",
                    "CSAFPID-5763317",
                    "CSAFPID-5982422"
                ]
            },
            "references": [
                {
                    "category": "external",
                    "summary": "Source - github",
                    "url": "https://github.com/advisories/GHSA-p9x5-jp3h-96mm"
                },
                {
                    "category": "external",
                    "summary": "Source raw - github",
                    "url": "https://api.github.com/advisories/GHSA-p9x5-jp3h-96mm"
                },
                {
                    "category": "external",
                    "summary": "Source - nvd",
                    "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-27971"
                },
                {
                    "category": "external",
                    "summary": "Source raw - nvd",
                    "url": "https://services.nvd.nist.gov/rest/json/cves/2.0?cveId=CVE-2026-27971"
                },
                {
                    "category": "external",
                    "summary": "Source - cveprojectv5",
                    "url": "https://www.cve.org/CVERecord?id=CVE-2026-27971"
                },
                {
                    "category": "external",
                    "summary": "Source raw - cveprojectv5",
                    "url": "https://raw.githubusercontent.com/CVEProject/cvelistV5/main/cves/2026/27xxx/CVE-2026-27971.json"
                },
                {
                    "category": "external",
                    "summary": "Source - first",
                    "url": "https://api.first.org/data/v1/epss?cve=CVE-2026-27971"
                },
                {
                    "category": "external",
                    "summary": "Source raw - first",
                    "url": "https://api.first.org/data/v1/epss?limit=10000&offset=0"
                },
                {
                    "category": "external",
                    "summary": "Source - osv",
                    "url": "https://www.googleapis.com/download/storage/v1/b/osv-vulnerabilities/o/npm%2FGHSA-p9x5-jp3h-96mm.json?alt=media"
                },
                {
                    "category": "external",
                    "summary": "Source - nucleitemplates",
                    "url": "https://github.com/projectdiscovery/nuclei-templates/blob/main/http/cves/2026/CVE-2026-27971.yaml"
                },
                {
                    "category": "external",
                    "summary": "Source raw - nucleitemplates",
                    "url": "https://github.com/projectdiscovery/nuclei-templates/raw/73f3304af1bbb351c50f923cfa77ed8efcca03e2/http%2Fcves%2F2026%2FCVE-2026-27971.yaml"
                },
                {
                    "category": "external",
                    "summary": "Source - first",
                    "url": "https://api.first.org/data/v1/epss?limit=10000&offset=0"
                },
                {
                    "category": "external",
                    "summary": "Source - gitlab",
                    "url": "https://gitlab.com/api/v4/projects/25847700/repository/files/npm%2F@builder.io%2Fqwik%2FCVE-2026-27971.yml/raw"
                },
                {
                    "category": "external",
                    "summary": "Reference - cveprojectv5; github; gitlab; nucleitemplates; nvd; osv",
                    "url": "https://github.com/QwikDev/qwik/security/advisories/GHSA-p9x5-jp3h-96mm"
                },
                {
                    "category": "external",
                    "summary": "Reference - github; gitlab; osv",
                    "url": "https://github.com/QwikDev/qwik/releases/tag/%40builder.io%2Fqwik%401.19.1"
                },
                {
                    "category": "external",
                    "summary": "Reference - github; gitlab",
                    "url": "https://github.com/advisories/GHSA-p9x5-jp3h-96mm"
                },
                {
                    "category": "external",
                    "summary": "Reference - github; gitlab; osv",
                    "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-27971"
                },
                {
                    "category": "external",
                    "summary": "Reference - nucleitemplates",
                    "url": "https://vulnerabletarget.com/VT-2026-27971"
                },
                {
                    "category": "external",
                    "summary": "Reference - gitlab",
                    "url": "https://github.com/QwikDev/qwik"
                }
            ],
            "scores": [
                {
                    "cvss_v3": {
                        "version": "3.1",
                        "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
                        "baseScore": 9.8,
                        "baseSeverity": "CRITICAL"
                    },
                    "products": [
                        "CSAFPID-5757214",
                        "CSAFPID-5759007",
                        "CSAFPID-5763317",
                        "CSAFPID-5982422"
                    ]
                }
            ],
            "title": "CVE-2026-27971"
        }
    ]
}