Link Following Affecting python3.13-freethreading package, versions <0:3.13.16-1.hum1


Severity

Recommended
0.0
medium
0
10

Based on Red Hat Enterprise Linux security rating.

Threat Intelligence

EPSS
0.18% (7th percentile)

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  • Snyk IDSNYK-RHEL10-PYTHON313FREETHREADING-20416699
  • published4 Oct 2026
  • disclosed29 Sept 2026

Introduced: 29 Sep 2026

NewCVE-2026-12345  (opens in a new tab)
CWE-59  (opens in a new tab)

How to fix?

Upgrade RHEL:10 python3.13-freethreading to version 0:3.13.16-1.hum1 or higher.
This issue was patched in RHSA-2026:75119.

NVD Description

Note: Versions mentioned in the description apply only to the upstream python3.13-freethreading package and not the python3.13-freethreading package as distributed by RHEL. See How to fix? for RHEL:10 relevant fixed versions and status.

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.

CVSS Base Scores

version 3.1