CVE-2026-112950

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{"affected": [{"affectedData": [{"product": "vitest", "vendor": "vitest-dev", "versions": [{"status": "affected", "version": ">= 4.1.11, < 4.1.12"}, {"status": "affected", "version": ">= 5.0.0-rc.2, < 5.0.3"}]}, {"product": "mocker", "vendor": "@vitest", "versions": [{"status": "affected", "version": ">= 4.1.11, < 4.1.12"}, {"status": "affected", "version": ">= 5.0.0-rc.2, < 5.0.3"}]}], "source": "security-advisories@github.com"}], "cveTags": [], "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."}], "id": "CVE-2026-112950", "lastModified": "2026-10-28T14:16:56.487", "metrics": {"cvssMetricV31": [{"cvssData": {"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"}, "exploitabilityScore": 2.2, "impactScore": 3.6, "source": "security-advisories@github.com", "type": "Secondary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-112950", "options": [{"exploitation": "poc"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "role": "CISA Coordinator", "timestamp": "2026-10-28T14:04:50.974371Z", "version": "2.0.3"}}]}, "published": "2026-10-20T16:17:05.807", "references": [{"source": "security-advisories@github.com", "url": "https://github.com/vitest-dev/vitest/commit/15cc006aa9f8683dc5f7e895d011fa7dc751ce35"}, {"source": "security-advisories@github.com", "url": "https://github.com/vitest-dev/vitest/commit/b825313243dc55757e8d7c0f9e7a792135e13473"}, {"source": "security-advisories@github.com", "url": "https://github.com/vitest-dev/vitest/releases/tag/v4.1.12"}, {"source": "security-advisories@github.com", "url": "https://github.com/vitest-dev/vitest/releases/tag/v5.0.3"}, {"source": "security-advisories@github.com", "url": "https://github.com/vitest-dev/vitest/security/advisories/GHSA-xp26-3454-mjgp"}, {"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "url": "https://github.com/vitest-dev/vitest/security/advisories/GHSA-xp26-3454-mjgp"}], "sourceIdentifier": "security-advisories@github.com", "vulnStatus": "Awaiting Analysis", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-22"}], "source": "security-advisories@github.com", "type": "Secondary"}]}

{}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[4.1.11,4.1.12)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[5.0.0-rc.2,5.0.3)"}}], "enrichment": {"confidence": 87.0, "confidence_source": "matching", "scores": [{"score": 87.0, "source": "matching"}]}, "original": {"product": "mocker", "source": "cna", "vendor": "@vitest"}, "product": "mocker", "vendor": "vitest.dev"}, {"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[4.1.11,4.1.12)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[5.0.0-rc.2,5.0.3)"}}], "enrichment": {"confidence": 100.0, "confidence_source": "matching", "scores": [{"score": 100.0, "source": "matching"}]}, "original": {"product": "vitest", "source": "cna", "vendor": "vitest-dev"}, "product": "vitest", "vendor": "vitest.dev"}], "created": "2026-10-20T17:30:13.834279+00:00", "updated": "2026-10-20T20:15:06.747179+00:00", "vendors": ["vitest.dev", "vitest.dev$PRODUCT$mocker", "vitest.dev$PRODUCT$vitest"]}