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CVE-2026-12345

Race condition in tempfile.TemporaryDirectory cleanup allows deleting files outside the temporary directory PUBLISHED

Description (CNA)

The cleanup of tempfile.TemporaryDirectory is vulnerable to a race condition. An attacker who can modify the tree during cleanup can replace a directory with a symbolic link, causing files outside of the temporary directory to be deleted or have their permissions and file flags reset, with the privileges of the process performing the cleanup. Note that platforms where shutil.rmtree.avoids_symlink_attacks is false, remain affected, and file flags may still be reset outside of the tree on all platforms.

Affected (CNA)

Vendor / productVersions
Python Software Foundation / CPythonaffected 0 before 3.12.15; affected 3.14.0 before 3.14.9; affected 3.15.0a1 before 3.15.0rc3

CWE

No CWE identifiers supplied.

References

ADP enrichment

CISA-ADP

No English description supplied.

No references supplied.

CVE

No English description supplied.