Path traversal via startswith() prefix confusion in is_path_in_dir (bypass of CVE-2025-12638 fix)

Description The ispathindir function in keras/src/utils/fileutils.py line 47-48 is a security-critical path validation function introduced as part of the fix for CVE-2025-12638. It is used by both filtersafezipinfos and filtersafetarinfos to validate that archive entries stay within the intended...

CVE-2025-12638

Keras version 3.11.3 is affected by a path traversal vulnerability in the keras.utils.getfile function when extracting tar archives. The vulnerability arises because the function uses Python's tarfile.extractall method without the security-critical filter='data' parameter. Although Keras attempts...

CVE-2025-12638

Keras 3.11.3 is affected by a path traversal in keras.utils.get_file() via tar archive extraction. The root cause is tarfile.extractall() used without filter="data"; though filter_safe_paths() is applied, a PATH_MAX symlink resolution bug during extraction can cause symlinks to be treated as lite...