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CVE-2025-13462

tarfile: Skip DIRTYPE normalization during GNU LONGNAME/LONGLINK handling

Published: Mar 12, 2026Updated: Jun 11, 2026 Sources: CVE List NVDCWE-20
NVD MITRE
3.3CVSSLOW
EPSS Score
0.2%
Top 94.1%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
Patch Available

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.

CVSS Vector Breakdown

AV:LAC:LPR:LUI:NS:UC:NI:LA:N
Exploitability
AV:LAttack Vector
Local
AC:LAttack Complexity
Low
PR:LPrivileges Required
Low
UI:NUser Interaction
None
Scope
S:UScope
Unchanged
Impact
C:NConfidentiality
None
I:LIntegrity
Low
A:NAvailability
None
Open in CVSS calculator →

Weaknesses

CWE-20CWE-74CWE-434

Affected Products

CPythonPython Software FoundationOSS Libraries
pythonpythonOSS Libraries
python software foundationoss-projectUSOSS Librariesaka python software foundation, psf
pythonoss-projectUSOSS Libraries

Attack Graph

Products CVE Techniques Tactics

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Exploitability

Official Patch Available

MITRE ATT&CK

4 techniques
Command and Control
Execution
Initial Access
Persistence
View detailed technique mapping

References

https://github.com/python/cpython/pull/143934
github.com
https://github.com/python/cpython/issues/141707
github.com
https://mail.python.org/archives/list/security-announce@python.org/thread/EOMI5I66ZMKQ2INNFT6T7IAIKUGPZYIE/
mail.python.org
and 6 more references View all →

Timeline

Published
Mar 12, 2026
Last Updated
Jun 11, 2026

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