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…

在 GitHub Advisory Database 阅读

2026/10/22 06:31，GitHub Advisory Database 发布了“virtualenv: Deletion recovery can change a symlink target's mode”（类型：漏洞公告）。严重程度为“中危”（medium）。相关技术：Python。CVE：CVE-2026-113724。