virtualenv: Deletion recovery can change a symlink target's mode

影響: pip:virtualenv < 21.14.9 → 21.14.9

The deletion error handler obtains permission bits with lstat() but applies them through chmod(), which follows symlinks. On an eligible unlink failure this can change permissions outside the destination. Anthropic's OSS Scanner reported this as ANT-2026-UK90QC27 in virtualenv-20261015-005, received on 15 October 2026. Affected area Permission recovery after a filesystem deletion error. Attacker-controlled input A deletion must fail on a symbolic-link entry and enter the permission-recovery bra…

GitHub Advisory Databaseで読む

2026/10/22 06:31、GitHub Advisory Databaseが「virtualenv: Deletion recovery can change a symlink target's mode」を公開しました (種別: 脆弱性アドバイザリ)。重大度は「警告」(medium) です。関連する技術: Python。CVE: CVE-2026-113724。