filelock: StrictSoftFileLock follows a symbolic link swapped in at <path>.filelock and creates claim files in a directory another local user chooses

影響: pip:filelock >= 3.30.0, <= 4.2.0 → 4.2.1

StrictSoftFileLock and AsyncStrictSoftFileLock check .filelock (the coordination directory that holds the lock's state) with one lstat call on its name. lstat reports what a name is without following a symbolic link (a file that redirects to another path). After that check, the code reaches .filelock/claims by pathname for every later operation (mkdir, scan, publish, link, unlink). _open_directory passes O_NOFOLLOW (a flag that makes an open fail when the final name is a symbolic link), but the…

GitHub Advisory Database에서 읽기

2026. 10. 29. 오전 06:08, GitHub Advisory Database에서 "filelock: StrictSoftFileLock follows a symbolic link swapped in at <path>.filelock and creates claim files in a directory another local user chooses"을(를) 게시했습니다 (유형: 취약점 권고). 심각도는 "보통"(medium)입니다. 관련 기술: Python. CVE: CVE-2026-112938.