{
    "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-2026-31862",
        "tracking": {
            "current_release_date": "2026-03-23T01:37:03.629602Z",
            "generator": {
                "date": "2026-02-17T15:00:00Z",
                "engine": {
                    "name": "V.E.L.M.A",
                    "version": "1.7"
                }
            },
            "id": "CVE-2026-31862",
            "initial_release_date": "2026-03-11T00:53:15.672890Z",
            "revision_history": [
                {
                    "date": "2026-03-11T00:53:15.672890Z",
                    "number": "1",
                    "summary": "CVE created.| Source created.| CVE status created. (valid)| Description created for source.| CVSS created.| References created (3).| CWES updated (1)."
                },
                {
                    "date": "2026-03-11T00:53:20.785072Z",
                    "number": "2",
                    "summary": "NCSC Score created."
                },
                {
                    "date": "2026-03-11T17:38:53.454185Z",
                    "number": "3",
                    "summary": "Source created.| CVE status created. (valid)| Description created for source.| CVSS created.| Products connected (1).| References created (2).| CWES updated (1)."
                },
                {
                    "date": "2026-03-11T17:38:55.327243Z",
                    "number": "4",
                    "summary": "NCSC Score updated."
                },
                {
                    "date": "2026-03-11T18:26:56.821363Z",
                    "number": "5",
                    "summary": "Source created.| CVE status created. (valid)| Description created for source.| CVSS created.| References created (2).| CWES updated (1)."
                },
                {
                    "date": "2026-03-11T18:27:01.937798Z",
                    "number": "6",
                    "summary": "NCSC Score updated."
                },
                {
                    "date": "2026-03-11T21:56:48.992793Z",
                    "number": "7",
                    "summary": "References created (1).| CWES updated (1)."
                },
                {
                    "date": "2026-03-12T14:38:43.590215Z",
                    "number": "8",
                    "summary": "Unknown change."
                },
                {
                    "date": "2026-03-12T14:57:35.430507Z",
                    "number": "9",
                    "summary": "Source created.| CVE status created. (valid)| EPSS created."
                },
                {
                    "date": "2026-03-17T19:25:52.507878Z",
                    "number": "10",
                    "summary": "Products connected (1).| Product Identifiers created (1)."
                },
                {
                    "date": "2026-03-17T19:25:56.459586Z",
                    "number": "11",
                    "summary": "NCSC Score updated."
                },
                {
                    "date": "2026-03-19T15:29:34.142521Z",
                    "number": "12",
                    "summary": "Source created.| CVE status created. (valid)| Description created for source.| CVSS created.| References created (4).| CWES updated (1)."
                },
                {
                    "date": "2026-03-20T09:32:37.225903Z",
                    "number": "13",
                    "summary": "Source connected.| CVE status created. (valid)| EPSS created."
                },
                {
                    "date": "2026-03-20T09:32:40.341725Z",
                    "number": "14",
                    "summary": "NCSC Score updated."
                }
            ],
            "status": "interim",
            "version": "14"
        }
    },
    "product_tree": {
        "branches": [
            {
                "branches": [
                    {
                        "branches": [
                            {
                                "category": "product_version_range",
                                "name": "vers:unknown/<1.24.0",
                                "product": {
                                    "name": "vers:unknown/<1.24.0",
                                    "product_id": "CSAFPID-5796656"
                                }
                            }
                        ],
                        "category": "product_name",
                        "name": "claudecodeui"
                    }
                ],
                "category": "vendor",
                "name": "siteboon"
            },
            {
                "branches": [
                    {
                        "branches": [
                            {
                                "category": "product_version_range",
                                "name": "vers:unknown/<1.24.0",
                                "product": {
                                    "name": "vers:unknown/<1.24.0",
                                    "product_id": "CSAFPID-5838854",
                                    "product_identification_helper": {
                                        "cpe": "cpe:2.3:a:cloudcli:cloud_cli:*:*:*:*:*:*:*:*"
                                    }
                                }
                            }
                        ],
                        "category": "product_name",
                        "name": "cloud_cli"
                    }
                ],
                "category": "vendor",
                "name": "cloudcli"
            }
        ]
    },
    "vulnerabilities": [
        {
            "cve": "CVE-2026-31862",
            "cwe": {
                "id": "CWE-77",
                "name": "Improper Neutralization of Special Elements used in a Command ('Command Injection')"
            },
            "notes": [
                {
                    "category": "description",
                    "text": "### Summary\nMultiple Git-related API endpoints use execAsync() with string interpolation of user-controlled parameters (file, branch, message, commit), allowing authenticated attackers to execute arbitrary OS commands.\n\n### Details\nThe claudecodeui application provides Git integration through various API endpoints. These endpoints accept user-controlled parameters such as file paths, branch names, commit messages, and commit hashes, which are directly interpolated into shell command strings passed to execAsync().\n\nThe application attempts to escape double quotes in some parameters, but this protection is trivially bypassable using other shell metacharacters such as:\n\nCommand substitution: $(command) or \\`command\\`\nCommand chaining: ;, &&, ||\nNewlines and other control characters\n\n### Affected Endpoints\n`GET /api/git/diff - file parameter`\n`GET /api/git/status - file parameter`\n`POST /api/git/commit - files array and message parameter`\n`POST /api/git/checkout - branch parameter`\n`POST /api/git/create-branch - branch parameter`\n`GET /api/git/commits - commit hash parameter`\n`GET /api/git/commit-diff - commit parameter`\n\n### Vulnerable Code\n\nFile: server/routes/git.js\n```\n// Line 205 - git status with file parameter\nconst { stdout: statusOutput } = await execAsync(\n  `git status --porcelain \"${file}\"`,  // INJECTION via file\n  { cwd: projectPath }\n);\n```\n```\n// Lines 375-379 - git commit with files array and message\nfor (const file of files) {\n  await execAsync(`git add \"${file}\"`, { cwd: projectPath });  // INJECTION via files[]\n}\nconst { stdout } = await execAsync(\n  `git commit -m \"${message.replace(/\"/g, '\\\\\"')}\"`,  // INJECTION via message (bypass with $())\n  { cwd: projectPath }\n);\n```\n```\n// Lines 541-543 - git show with commit parameter (no quotes!)\nconst { stdout } = await execAsync(\n  `git show ${commit}`,  // INJECTION via commit\n  { cwd: projectPath }\n);\n```\n\n### Impact\n- Remote Code Execution as the Node.js process user\n- Full server compromise\n- Data exfiltration\n- Supply chain attacks - modify committed code to inject malware\n\n---\n\n### Fix\n\n**Commit:** siteboon/claudecodeui@55567f4\n\n#### Root cause remediation\n\nAll vulnerable `execAsync()` calls have been replaced with the existing `spawnAsync()` helper (which uses `child_process.spawn` with `shell: false`). Arguments are passed as an array directly to the OS — shell metacharacters in user input are inert.\n\n**Endpoints patched in `server/routes/git.js`:**\n\n- `GET /api/git/diff` — `file` (4 calls)\n- `GET /api/git/file-with-diff` — `file` (3 calls)\n- `POST /api/git/commit` — `files[]`, `message`\n- `POST /api/git/checkout` — `branch`\n- `POST /api/git/create-branch` — `branch`\n- `GET /api/git/commits` — `commit.hash`\n- `GET /api/git/commit-diff` — `commit`\n- `POST /api/git/generate-commit-message` — `file`\n- `POST /api/git/discard` — `file` (3 calls)\n- `POST /api/git/delete-untracked` — `file`\n- `POST /api/git/publish` — `branch`\n\nA strict allowlist regex (`/^[0-9a-f]{4,64}$/i`) was also added to validate the `commit` parameter in `/api/git/commit-diff` before it reaches the git process.\n\n#### Before / After\n\n```js\n// BEFORE — shell interprets the string, injection possible\nconst { stdout } = await execAsync(`git show ${commit}`, { cwd: projectPath });\n\n// AFTER — no shell, args passed directly to the process\nconst { stdout } = await spawnAsync('git', ['show', commit], { cwd: projectPath });\n```",
                    "title": "github - https://github.com/advisories/GHSA-f2fc-vc88-6w7q"
                },
                {
                    "category": "description",
                    "text": "Cloud CLI (aka Claude Code UI) is a desktop and mobile UI for Claude Code, Cursor CLI, Codex, and Gemini-CLI. Prior to 1.24.0, multiple Git-related API endpoints use execAsync() with string interpolation of user-controlled parameters (file, branch, message, commit), allowing authenticated attackers to execute arbitrary OS commands. This vulnerability is fixed in 1.24.0.",
                    "title": "cveprojectv5 - https://www.cve.org/CVERecord?id=CVE-2026-31862"
                },
                {
                    "category": "description",
                    "text": "Cloud CLI (aka Claude Code UI) is a desktop and mobile UI for Claude Code, Cursor CLI, Codex, and Gemini-CLI. Prior to 1.24.0, multiple Git-related API endpoints use execAsync() with string interpolation of user-controlled parameters (file, branch, message, commit), allowing authenticated attackers to execute arbitrary OS commands. This vulnerability is fixed in 1.24.0.",
                    "title": "nvd - https://nvd.nist.gov/vuln/detail/CVE-2026-31862"
                },
                {
                    "category": "description",
                    "text": "### Summary\nMultiple Git-related API endpoints use execAsync() with string interpolation of user-controlled parameters (file, branch, message, commit), allowing authenticated attackers to execute arbitrary OS commands.\n\n### Details\nThe claudecodeui application provides Git integration through various API endpoints. These endpoints accept user-controlled parameters such as file paths, branch names, commit messages, and commit hashes, which are directly interpolated into shell command strings passed to execAsync().\n\nThe application attempts to escape double quotes in some parameters, but this protection is trivially bypassable using other shell metacharacters such as:\n\nCommand substitution: $(command) or \\`command\\`\nCommand chaining: ;, &&, ||\nNewlines and other control characters\n\n### Affected Endpoints\n`GET /api/git/diff - file parameter`\n`GET /api/git/status - file parameter`\n`POST /api/git/commit - files array and message parameter`\n`POST /api/git/checkout - branch parameter`\n`POST /api/git/create-branch - branch parameter`\n`GET /api/git/commits - commit hash parameter`\n`GET /api/git/commit-diff - commit parameter`\n\n### Vulnerable Code\n\nFile: server/routes/git.js\n```\n// Line 205 - git status with file parameter\nconst { stdout: statusOutput } = await execAsync(\n  `git status --porcelain \"${file}\"`,  // INJECTION via file\n  { cwd: projectPath }\n);\n```\n```\n// Lines 375-379 - git commit with files array and message\nfor (const file of files) {\n  await execAsync(`git add \"${file}\"`, { cwd: projectPath });  // INJECTION via files[]\n}\nconst { stdout } = await execAsync(\n  `git commit -m \"${message.replace(/\"/g, '\\\\\"')}\"`,  // INJECTION via message (bypass with $())\n  { cwd: projectPath }\n);\n```\n```\n// Lines 541-543 - git show with commit parameter (no quotes!)\nconst { stdout } = await execAsync(\n  `git show ${commit}`,  // INJECTION via commit\n  { cwd: projectPath }\n);\n```\n\n### Impact\n- Remote Code Execution as the Node.js process user\n- Full server compromise\n- Data exfiltration\n- Supply chain attacks - modify committed code to inject malware\n\n---\n\n### Fix\n\n**Commit:** siteboon/claudecodeui@55567f4\n\n#### Root cause remediation\n\nAll vulnerable `execAsync()` calls have been replaced with the existing `spawnAsync()` helper (which uses `child_process.spawn` with `shell: false`). Arguments are passed as an array directly to the OS — shell metacharacters in user input are inert.\n\n**Endpoints patched in `server/routes/git.js`:**\n\n- `GET /api/git/diff` — `file` (4 calls)\n- `GET /api/git/file-with-diff` — `file` (3 calls)\n- `POST /api/git/commit` — `files[]`, `message`\n- `POST /api/git/checkout` — `branch`\n- `POST /api/git/create-branch` — `branch`\n- `GET /api/git/commits` — `commit.hash`\n- `GET /api/git/commit-diff` — `commit`\n- `POST /api/git/generate-commit-message` — `file`\n- `POST /api/git/discard` — `file` (3 calls)\n- `POST /api/git/delete-untracked` — `file`\n- `POST /api/git/publish` — `branch`\n\nA strict allowlist regex (`/^[0-9a-f]{4,64}$/i`) was also added to validate the `commit` parameter in `/api/git/commit-diff` before it reaches the git process.\n\n#### Before / After\n\n```js\n// BEFORE — shell interprets the string, injection possible\nconst { stdout } = await execAsync(`git show ${commit}`, { cwd: projectPath });\n\n// AFTER — no shell, args passed directly to the process\nconst { stdout } = await spawnAsync('git', ['show', commit], { cwd: projectPath });\n```",
                    "title": "github - https://api.github.com/advisories/GHSA-f2fc-vc88-6w7q"
                },
                {
                    "category": "other",
                    "text": "0.00062",
                    "title": "EPSS"
                },
                {
                    "category": "other",
                    "text": "4.1",
                    "title": "NCSC Score"
                },
                {
                    "category": "other",
                    "text": "The value of the most recent EPSS score",
                    "title": "NCSC Score top decreasing factors"
                }
            ],
            "product_status": {
                "known_affected": [
                    "CSAFPID-5796656",
                    "CSAFPID-5838854"
                ]
            },
            "references": [
                {
                    "category": "external",
                    "summary": "Source - github",
                    "url": "https://github.com/advisories/GHSA-f2fc-vc88-6w7q"
                },
                {
                    "category": "external",
                    "summary": "Source raw - github",
                    "url": "https://api.github.com/advisories/GHSA-f2fc-vc88-6w7q"
                },
                {
                    "category": "external",
                    "summary": "Source - cveprojectv5",
                    "url": "https://www.cve.org/CVERecord?id=CVE-2026-31862"
                },
                {
                    "category": "external",
                    "summary": "Source raw - cveprojectv5",
                    "url": "https://raw.githubusercontent.com/CVEProject/cvelistV5/main/cves/2026/31xxx/CVE-2026-31862.json"
                },
                {
                    "category": "external",
                    "summary": "Source - nvd",
                    "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-31862"
                },
                {
                    "category": "external",
                    "summary": "Source raw - nvd",
                    "url": "https://services.nvd.nist.gov/rest/json/cves/2.0?cveId=CVE-2026-31862"
                },
                {
                    "category": "external",
                    "summary": "Source - first",
                    "url": "https://api.first.org/data/v1/epss?cve=CVE-2026-31862"
                },
                {
                    "category": "external",
                    "summary": "Source raw - first",
                    "url": "https://api.first.org/data/v1/epss?limit=10000&offset=0"
                },
                {
                    "category": "external",
                    "summary": "Source - github",
                    "url": "https://api.github.com/advisories/GHSA-f2fc-vc88-6w7q"
                },
                {
                    "category": "external",
                    "summary": "Source - first",
                    "url": "https://api.first.org/data/v1/epss?limit=10000&offset=0"
                },
                {
                    "category": "external",
                    "summary": "Reference - cveprojectv5; github; nvd",
                    "url": "https://github.com/siteboon/claudecodeui/security/advisories/GHSA-f2fc-vc88-6w7q"
                },
                {
                    "category": "external",
                    "summary": "Reference - cveprojectv5; github; nvd",
                    "url": "https://github.com/siteboon/claudecodeui/releases/tag/v1.24.0"
                },
                {
                    "category": "external",
                    "summary": "Reference - github",
                    "url": "https://github.com/advisories/GHSA-f2fc-vc88-6w7q"
                },
                {
                    "category": "external",
                    "summary": "Reference - github",
                    "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-31862"
                }
            ],
            "scores": [
                {
                    "cvss_v3": {
                        "version": "3.1",
                        "vectorString": "CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H",
                        "baseScore": 9.1,
                        "baseSeverity": "CRITICAL"
                    },
                    "products": [
                        "CSAFPID-5796656",
                        "CSAFPID-5838854"
                    ]
                }
            ],
            "title": "CVE-2026-31862"
        }
    ]
}