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Fencer Vulns
low 3.3

CVE-2025-13462 json

tarfile: Skip DIRTYPE normalization during GNU LONGNAME/LONGLINK handling

published 2026-03-12 7 mo ago modified 2026-08-13 2 mo ago also BIT-python-2025-13462 , BIT-python-min-2025-13462 , EUVD-2025-208613

cvss
3.3
version 3.1, NVD
cisa kev
Not listed
not in CISA's catalog
epss
0.2%
EPSS 0.2% chance of exploitation in 30 days, percentile 7%
public exploits
0
none known

Summary

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.

Patch / fix

  • Python Software Foundation CPython 3.10.21, 3.11.16, 3.12.14, 3.13.13, 3.14.4, 3.15.0a8
  • python3.11 Debian 12 3.11.2-6+deb12u8
  • python3.13 Debian 13 3.13.5-2+deb13u1
  • python3.14 Debian 14 3.14.3-4

debian advisories DEBIAN-CVE-2025-13462

  • python3.10 Ubuntu 22.04 LTS 3.10.12-1~22.04.16
  • python3.12 Ubuntu 24.04 LTS 3.12.3-1ubuntu0.15

ubuntu advisories UBUNTU-CVE-2025-13462

Ubuntu security data © Canonical Ltd., from https://github.com/canonical/ubuntu-security-notices via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

  • python3.11 hummingbird 1 3.11.15-4.2.hum1
  • python3.11-idle hummingbird 1 3.11.15-4.2.hum1
  • python3.11-libs hummingbird 1 3.11.15-4.2.hum1
  • python3.11-test hummingbird 1 3.11.15-4.2.hum1
  • python3.11-tkinter hummingbird 1 3.11.15-4.2.hum1
  • python3.12 hummingbird 1 3.12.13-3.1.hum1
  • python3.12-idle hummingbird 1 3.12.13-3.1.hum1
  • python3.12-libs hummingbird 1 3.12.13-3.1.hum1

red hat advisories RHSA-2026:11324RHSA-2026:10118RHSA-2026:7661RHSA-2026:7443

  • python311 Linux Micro 6.1 3.11.16-slfo.1.1_1.1
  • python311-core Linux Micro 6.1 3.11.16-slfo.1.1_1.1
  • python311 SLES for SAP 15 SP5, SLES for SAP 15 SP4, SLES 15 SP5-LTSS +6 more 3.11.15-150400.9.85.1
  • python311-core SLES for SAP 15 SP5, SLES for SAP 15 SP4, SLES 15 SP5-LTSS +6 more 3.11.15-150400.9.85.1
  • python311-documentation SLES for SAP 15 SP5, SLES for SAP 15 SP4, SLES 15 SP5-LTSS +5 more 3.11.15-150400.9.85.1
  • python311 Linux Micro 6.1 3.11.15-slfo.1.1_3.1
  • python311-core Linux Micro 6.1 3.11.15-slfo.1.1_3.1
  • python310 SLES for SAP 15 SP4, SLES 15 SP4-LTSS, SLE High Performance Computing 15 SP4-LTSS +2 more 3.10.20-150400.4.107.1

suse advisories SUSE-SU-2026:4534-1SUSE-SU-2026:23743-1SUSE-SU-2026:1530-1SUSE-SU-2026:1417-1SUSE-SU-2026:21254-1SUSE-SU-2026:1385-1

  • python313 openSUSE Leap 16.0 3.13.13-160000.1.1
  • python313-core openSUSE Leap 16.0 3.13.13-160000.1.1
  • python313-nogil openSUSE Leap 16.0 3.13.13-160000.1.1
  • python313-documentation openSUSE Leap 16.0 3.13.13-160000.1.1
  • python313-nogil-nogil-core openSUSE Leap 16.0 3.13.13-160000.1.1
  • python310 openSUSE Tumbleweed 3.10.20-3.1
  • python311 openSUSE Tumbleweed 3.11.15-4.1
  • python312 openSUSE Tumbleweed 3.12.13-4.1

opensuse advisories openSUSE-SU-2026:20517-1openSUSE-SU-2026:10477-1openSUSE-SU-2026:10478-1openSUSE-SU-2026:10479-1openSUSE-SU-2026:10480-1openSUSE-SU-2026:10481-1

  • python3 Azure Linux 3.0 3.12.9-13

azure linux advisories AZL-80493

Azure Linux vulnerability data, Copyright (c) Microsoft Corporation, from https://github.com/microsoft/AzureLinuxVulnerabilityData via OSV, under the MIT licence; changed: normalised to fixed package versions per release. MIT

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2025-13462 updated cvss 2.5

cpython: cpython: `tarfile` module misinterprets crafted tar archives leading to data integrity issues

  • Red Hat Exploit Intelligence exploit-intelligence-tech-preview/vulnerability-analysis-rhel9 Red Hat Enterprise Linux 6 python, tkinter, python-libs, python-test, python-tools Red Hat Enterprise Linux 7 python, python3, tkinter, python-libs, python-test, python-tools, +4 more Red Hat Enterprise Linux 8 scipy, python3, python36, python3.12, python-nose, python-wheel, +31 more Red Hat Enterprise Linux 9 python3, python3.9, python3.12, python3.14, python3-idle, python3-libs, +16 more Red Hat Enterprise Linux 10 python3.12, python3.14
    +4 more products
    Red Hat Enterprise Linux AI (RHEL AI) 3 rhelai3/bootc-cuda-rhel9, rhelai3/bootc-rocm-rhel9, rhelai3/bootc-gaudi-rhel9, rhelai3/bootc-aws-cuda-rhel9, rhelai3/bootc-gcp-cuda-rhel9, rhelai3/bootc-azure-cuda-rhel9, +1 more Red Hat OpenShift AI (RHOAI) rhoai/odh-workbench-codeserver-datascience-cpu-py312-rhel9 Red Hat OpenShift Dev Spaces devspaces/code-rhel9, devspaces/pluginregistry-rhel9 Red Hat Self-service automation portal 2 ansible-automation-platform/bootc-automation-portal-rhel9
    affected: workaround, no fix available “Fix deferred”
  • Red Hat Hardened Images python3 3.14.4-1.hum1, python3.14 3.14.4-1.hum1, python3.13 3.13.13-1.hum1, python3-idle 3.14.4-1.hum1, python3-libs 3.14.4-1.hum1, python3-test 3.14.4-1.hum1, +22 more
    fixed: vendor fix RHSA-2026:7661

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

CISA SSVC

Exploitation
none
Automatable
no
Technical impact
partial
Assessed
7 mo ago

Exploit prediction

0.18% chance of exploitation in the next 30 days, higher than 7% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CNA 4.0 2.0 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
CNA 4.0 2.0 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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
NVD 3.1 3.3 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N

Affected products

  • Python Software Foundation CPython

Classification

Weakness
  • CWE-434 Unrestricted Upload of File with Dangerous Type
  • CWE-74 Improper Neutralization of Special Elements in Output Used by a Downstream Component
  • CWE-20 Improper Input Validation

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

CPEs and fixed versions use Anchore's correction of NVD's data: Added CPE configurations because not yet analyzed by NVD.