{"api_version":"1","generated_at":"2026-11-04T07:32:55+00:00","cve":"CVE-2026-63478","urls":{"html":"https://cve.report/CVE-2026-63478","api":"https://cve.report/api/cve/CVE-2026-63478.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2026-63478","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-63478"},"summary":{"title":"isomorphic-git: Path traversal via a \"..\" tree-entry name writes files outside the working directory on clone/checkout","description":"isomorphic-git is a pure JavaScript implementation of Git for Node.js and browsers. Prior to 1.38.6, isomorphic-git's tree parser in src/models/GitTree.js accepts a standalone .. tree-entry name because it rejects only path separators. During clone or checkout from a malicious or man-in-the-middle-controlled non-GitHub remote, nested .. entries can escape the working-tree root and write files at attacker-selected parent paths on any host-backed fs provider. The arbitrary file write can overwrite startup or configuration files and lead to code execution. GitHub-hosted trees are not a direct source because GitHub rejects .. entries during repository integrity checks. 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Prior to 1.38.6, isomorphic-git's tree parser in src/models/GitTree.js accepts a standalone .. tree-entry name because it rejects only path separators. During clone or checkout from a malicious or man-in-the-middle-controlled non-GitHub remote, nested .. entries can escape the working-tree root and write files at attacker-selected parent paths on any host-backed fs provider. The arbitrary file write can overwrite startup or configuration files and lead to code execution. GitHub-hosted trees are not a direct source because GitHub rejects .. entries during repository integrity checks. This issue is fixed in version 1.38.6.","Type":"Description","Title":"isomorphic-git: Path traversal via a \"..\" tree-entry name writes"}]}}}