CVE-2025-13462

tarfile: Skip DIRTYPE normalization during GNU LONGNAME/LONGLINK handling

Published: Mar 12, 2026Updated: Aug 13, 2026 Sources: CVE List NVDCWE-20

3.3LOW

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.

No summary for this CVE yet.

CVSS Vector Breakdown

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

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Weaknesses

CWE-20 CWE-74 CWE-434

Affected Products

Python Software Foundation

oss-project·USaka psf

CPython

OSS Libraries

python

oss-project·US

pythonLibraryLibrary

OSS Libraries

Exploitability

Official Patch Available

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Attack Graph

Products CVE Techniques Tactics

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MITRE ATT&CK

4 techniques

Command and Control

Execution

Initial Access

Persistence

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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 →

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