CVE-2025-13462

LOW

CPython Tarfile Archive Misinterpretation via AREGTYPE Block Normalization

Title source: llm
STIX 2.1

Description

The "tarfile" module would still apply normalization of AREGTYPE (\x00) blocks to DIRTYPE, even while processing a multi-block member such as GNUTYPE_LONGNAME or GNUTYPE_LONGLINK. This could result in a crafted tar archive being misinterpreted by the tarfile module compared to other implementations.

References (9)

Core 9
Core References
Issue Tracking issue-tracking
https://github.com/python/cpython/issues/141707

Scores

CVSS v3 3.3
EPSS 0.0016
EPSS Percentile 5.9%
Attack Vector LOCAL
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N

CISA SSVC

Vulnrichment
Exploitation none
Automatable no
Technical Impact partial

Details

CWE
CWE-20 CWE-434 CWE-74
Status published
Products (6)
python/python 3.15.0 alpha1 (7 CPE variants)
python/python < 3.13.13
Python Software Foundation/CPython < 3.13.13
Python Software Foundation/CPython < 3.15.0
Python Software Foundation/CPython 3.14.0 - 3.14.4
Python Software Foundation/CPython 3.15.0a1 - 3.15.0a8
Published Mar 12, 2026
Tracked Since Mar 13, 2026