Low 2.0Published Mar 12, 2026

CVE-2025-13462tarfile: Skip DIRTYPE normalization during GNU LONGNAME/LONGLINK handling

Updated under an hour ago (Oct 27, 2026, 8:25 PM ET)

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It affects Python Software Foundation CPython and 1 other product. Add what you run to find out whether that includes you.

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Every CVE for Python Software Foundation CPython

Exploited in the last 30 days

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: 2.0 LOW (v4.0, CNA)CVSS:4.0/AV:L/AC:H/AT:P/PR:L/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N
Weakness (CWE): CWE-434, CWE-74, CWE-20
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: PSF
NVD analysis: Analyzed
Record last updated: Aug 12, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

Python Software Foundation CPython python_software_foundation:cpython (from the name)	before 3.10.21; from 3.11.0 before 3.11.16; from 3.12.0 before 3.12.14; from 3.13.0 before 3.13.13; from 3.14.0 before 3.14.4; from 3.15.0a1 before 3.15.0a8	CNA record
python python python:python	before 3.13.13; from 3.14.0 before 3.14.4; 3.15.0; 3.15.0; 3.15.0; 3.15.0; 3.15.0; 3.15.0; and 1 more ranges	NVD

References

References

https://github.com/python/cpython/pull/143934	patch, issue-tracking
https://github.com/python/cpython/issues/141707	issue-tracking
https://mail.python.org/archives/list/security-announce@python.org/thread/EOMI5I66ZMKQ2INNFT6T7IAIKUGPZYIE/	vendor-advisory, mailing-list
https://github.com/python/cpython/commit/42d754e34c06e57ad6b8e7f92f32af679912d8ab	patch
https://github.com/python/cpython/commit/7ad3093d76a748af55bdb1d2e8aad3638163b017	patch
https://github.com/python/cpython/commit/ae99fe3a33b43e303a05f012815cef60b611a9c7	patch
https://github.com/python/cpython/commit/72dde1016493c52abe857fc4a7bf6c40138b4114	patch
https://github.com/python/cpython/commit/9a23b753552afa28e3a2f4d8863572fc66479406	patch
https://github.com/python/cpython/commit/d10950739a78f54d0718d88fb5a868374603c084	patch

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.