{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2026-112950",
        "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "state": "PUBLISHED",
        "assignerShortName": "GitHub_M",
        "dateReserved": "2026-10-19T21:30:47.246Z",
        "datePublished": "2026-10-20T15:21:32.396Z",
        "dateUpdated": "2026-10-20T15:21:32.396Z"
    },
    "containers": {
        "cna": {
            "title": "Vitest: Windows backslash traversal bypasses the @vitest/mocker redirect allowlist fix",
            "problemTypes": [
                {
                    "descriptions": [
                        {
                            "cweId": "CWE-22",
                            "lang": "en",
                            "description": "CWE-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')",
                            "type": "CWE"
                        }
                    ]
                }
            ],
            "metrics": [
                {
                    "cvssV3_1": {
                        "attackComplexity": "HIGH",
                        "attackVector": "NETWORK",
                        "availabilityImpact": "NONE",
                        "baseScore": 5.9,
                        "baseSeverity": "MEDIUM",
                        "confidentialityImpact": "HIGH",
                        "integrityImpact": "NONE",
                        "privilegesRequired": "NONE",
                        "scope": "UNCHANGED",
                        "userInteraction": "NONE",
                        "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N",
                        "version": "3.1"
                    }
                }
            ],
            "references": [
                {
                    "name": "https://github.com/vitest-dev/vitest/security/advisories/GHSA-xp26-3454-mjgp",
                    "tags": [
                        "x_refsource_CONFIRM"
                    ],
                    "url": "https://github.com/vitest-dev/vitest/security/advisories/GHSA-xp26-3454-mjgp"
                },
                {
                    "name": "https://github.com/vitest-dev/vitest/commit/15cc006aa9f8683dc5f7e895d011fa7dc751ce35",
                    "tags": [
                        "x_refsource_MISC"
                    ],
                    "url": "https://github.com/vitest-dev/vitest/commit/15cc006aa9f8683dc5f7e895d011fa7dc751ce35"
                },
                {
                    "name": "https://github.com/vitest-dev/vitest/commit/b825313243dc55757e8d7c0f9e7a792135e13473",
                    "tags": [
                        "x_refsource_MISC"
                    ],
                    "url": "https://github.com/vitest-dev/vitest/commit/b825313243dc55757e8d7c0f9e7a792135e13473"
                },
                {
                    "name": "https://github.com/vitest-dev/vitest/releases/tag/v4.1.12",
                    "tags": [
                        "x_refsource_MISC"
                    ],
                    "url": "https://github.com/vitest-dev/vitest/releases/tag/v4.1.12"
                },
                {
                    "name": "https://github.com/vitest-dev/vitest/releases/tag/v5.0.3",
                    "tags": [
                        "x_refsource_MISC"
                    ],
                    "url": "https://github.com/vitest-dev/vitest/releases/tag/v5.0.3"
                }
            ],
            "affected": [
                {
                    "vendor": "vitest-dev",
                    "product": "vitest",
                    "versions": [
                        {
                            "version": ">= 4.1.11, < 4.1.12",
                            "status": "affected"
                        },
                        {
                            "version": ">= 5.0.0-rc.2, < 5.0.3",
                            "status": "affected"
                        }
                    ]
                },
                {
                    "vendor": "@vitest",
                    "product": "mocker",
                    "versions": [
                        {
                            "version": ">= 4.1.11, < 4.1.12",
                            "status": "affected"
                        },
                        {
                            "version": ">= 5.0.0-rc.2, < 5.0.3",
                            "status": "affected"
                        }
                    ]
                }
            ],
            "providerMetadata": {
                "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
                "shortName": "GitHub_M",
                "dateUpdated": "2026-10-20T15:21:32.396Z"
            },
            "descriptions": [
                {
                    "lang": "en",
                    "value": "Vitest is a Vite-native testing framework for JavaScript and TypeScript projects. From 4.1.11 until 4.1.12 and 5.0.3, isFileLoadingAllowed and the filesystem read interpret backslashes differently on Windows in packages/mocker/src/node/interceptorPlugin.ts. When a client can reach the Vite dev server on Windows and register a redirect mock containing backslash traversal, POSIX joining preserves a Windows backslash traversal that the later filesystem read interprets as a path separator, so the client can read a file outside server.fs.allow that the Vitest process can access. This issue is fixed in versions 4.1.12 and 5.0.3."
                }
            ],
            "source": {
                "advisory": "GHSA-xp26-3454-mjgp",
                "discovery": "UNKNOWN"
            }
        }
    }
}