tarfile: Skip DIRTYPE normalization during GNU LONGNAME/LONGLINK handling
Priority LOW 10CWE-20Published · Updated
Key facts
- Attack vector
- Local
- Privileges required
- Low
- User interaction
- None
- Attack complexity
- High
- Attack requirements
- Present
- Impact type
- Code execution
- Confidentiality · integrity · availability
- None · Low · None
- Fix status
- Partial Red Hat: 1 fixed, 10 without a fix
Attack profile from CVSS 4.0 · CNA. Fix status from CNA and Red Hat. Impact type from CWE-434.
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.
Why it matters now
Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00183 7th percentileScored 2026-11-07
Fix Partial CPython (Python Software Foundation): 3.10.21, 3.11.16, 3.12.14 +3Red Hat: 4 advisoriesRed Hat: 1 fixed, 10 without a fix
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| Python Software Foundation | CPython | before 3.10.21; 3.11.0 to before 3.11.16; 3.12.0 to before 3.12.14; 3.13.0 to before 3.13.13; 3.14.0 to before 3.14.4; 3.15.0a1 to before 3.15.0a8 | 3.10.21, 3.11.16, 3.12.14, 3.13.13, 3.14.4, 3.15.0a8 | Patch available | CNA |
- CPython VendorPython Software Foundation Affected before 3.10.21; 3.11.0 to before 3.11.16; 3.12.0 to before 3.12.14; 3.13.0 to before 3.13.13; 3.14.0 to before 3.14.4; 3.15.0a1 to before 3.15.0a8 Fixed in 3.10.21, 3.11.16, 3.12.14, 3.13.13, 3.14.4, 3.15.0a8 Patch available CNA
CPE configurations NVD · 8
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:python:python:*:*:*:*:*:*:*:* | before 3.13.13; 3.14.0 to before 3.14.4 | Vulnerable | python-pillow |
| cpe:2.3:a:python:python:3.15.0:alpha1:*:*:*:*:*:* | 3.15.0 alpha1 | Vulnerable | python-pillow |
| cpe:2.3:a:python:python:3.15.0:alpha2:*:*:*:*:*:* | 3.15.0 alpha2 | Vulnerable | python-pillow |
| cpe:2.3:a:python:python:3.15.0:alpha3:*:*:*:*:*:* | 3.15.0 alpha3 | Vulnerable | python-pillow |
| cpe:2.3:a:python:python:3.15.0:alpha4:*:*:*:*:*:* | 3.15.0 alpha4 | Vulnerable | python-pillow |
| cpe:2.3:a:python:python:3.15.0:alpha5:*:*:*:*:*:* | 3.15.0 alpha5 | Vulnerable | python-pillow |
| cpe:2.3:a:python:python:3.15.0:alpha6:*:*:*:*:*:* | 3.15.0 alpha6 | Vulnerable | python-pillow |
| cpe:2.3:a:python:python:3.15.0:alpha7:*:*:*:*:*:* | 3.15.0 alpha7 | Vulnerable | python-pillow |
- cpe:2.3:a:python:python:*:*:*:*:*:*:*:* Versions before 3.13.13; 3.14.0 to before 3.14.4 Vulnerable ·python-pillow
- cpe:2.3:a:python:python:3.15.0:alpha1:*:*:*:*:*:* Versions 3.15.0 alpha1 Vulnerable ·python-pillow
- cpe:2.3:a:python:python:3.15.0:alpha2:*:*:*:*:*:* Versions 3.15.0 alpha2 Vulnerable ·python-pillow
- cpe:2.3:a:python:python:3.15.0:alpha3:*:*:*:*:*:* Versions 3.15.0 alpha3 Vulnerable ·python-pillow
- cpe:2.3:a:python:python:3.15.0:alpha4:*:*:*:*:*:* Versions 3.15.0 alpha4 Vulnerable ·python-pillow
- cpe:2.3:a:python:python:3.15.0:alpha5:*:*:*:*:*:* Versions 3.15.0 alpha5 Vulnerable ·python-pillow
- cpe:2.3:a:python:python:3.15.0:alpha6:*:*:*:*:*:* Versions 3.15.0 alpha6 Vulnerable ·python-pillow
- cpe:2.3:a:python:python:3.15.0:alpha7:*:*:*:*:*:* Versions 3.15.0 alpha7 Vulnerable ·python-pillow
Remediation
- Fix · CNA CPython (Python Software Foundation) Fixed in 3.10.21, 3.11.16, 3.12.14, 3.13.13, 3.14.4, 3.15.0a8
Red Hat 4 advisories
- RHSA-2026:11324 Released 2026-04-28 · Red Hat rating LowRed Hat Hardened Images RPMs Security Update
- Red Hat Hardened Images python3.11-3.11.15-4.2.hum1@aarch64, python3.11-3.11.15-4.2.hum1@src, python3.11-3.11.15-4.2.hum1@x86_64 +12
- RHSA-2026:10118 Released 2026-04-23 · Red Hat rating ModerateRed Hat Hardened Images RPMs Security Update
- Red Hat Hardened Images python3.12-3.12.13-3.1.hum1@aarch64, python3.12-3.12.13-3.1.hum1@src, python3.12-3.12.13-3.1.hum1@x86_64 +12
- RHSA-2026:7661 Released 2026-04-11 · Red Hat rating ImportantRed Hat Hardened Images RPMs bug fix and enhancement update
- Red Hat Hardened Images python-unversioned-command-3.14.4-1.hum1@noarch@public-hummingbird-aarch64-rpms, python-unversioned-command-3.14.4-1.hum1@noarch@public-hummingbird-x86_64-rpms, python3-3.14.4-1.hum1@aarch64 +28
Show 1 more Red Hat advisories
- RHSA-2026:7443 Released 2026-04-10 · Red Hat rating ImportantRed Hat Hardened Images RPMs bug fix and enhancement update
- Red Hat Hardened Images python3.13-3.13.13-1.hum1@aarch64, python3.13-3.13.13-1.hum1@src, python3.13-3.13.13-1.hum1@x86_64 +16
Vendor assessments
Red Hat
Red Hat rating: Low. Red Hat's page for this CVE →
| Product | Status | Plan or fix |
|---|---|---|
| Exploit Intelligence | Affected | No fix yet: Fix deferred |
| Red Hat Enterprise Linux 10 | Affected | No fix yet: Fix deferred |
| Red Hat Enterprise Linux 6 | Affected | No fix yet: Fix deferred |
| Red Hat Enterprise Linux 7 | Affected | No fix yet: Fix deferred |
| Red Hat Enterprise Linux 8 | Affected | No fix yet: Fix deferred |
| Red Hat Enterprise Linux 9 | Affected | No fix yet: Fix deferred |
| Red Hat Enterprise Linux AI (RHEL AI) 3 | Affected | No fix yet: Fix deferred |
| Red Hat OpenShift AI (RHOAI) | Affected | No fix yet: Fix deferred |
| Red Hat OpenShift Dev Spaces | Affected | No fix yet: Fix deferred |
| Self-service automation portal 2 | Affected | No fix yet: Fix deferred |
| Red Hat Hardened Images | Fixed | RHSA-2026:10118, RHSA-2026:11324, RHSA-2026:7443, RHSA-2026:7661 |
Timeline
- 2026-10-02 Threatist record created from CVE-2025-13462
- 2026-10-03 Alias added: GHSA-9qpv-486p-2v4h
References
Patch 7
- https://github.com/python/cpython/pull/143934
- https://github.com/python/cpython/commit/42d754e34c06e57ad6b8e7f92f32af679912d8ab
- https://github.com/python/cpython/commit/7ad3093d76a748af55bdb1d2e8aad3638163b017
- https://github.com/python/cpython/commit/ae99fe3a33b43e303a05f012815cef60b611a9c7
- https://github.com/python/cpython/commit/72dde1016493c52abe857fc4a7bf6c40138b4114
- https://github.com/python/cpython/commit/9a23b753552afa28e3a2f4d8863572fc66479406
- https://github.com/python/cpython/commit/d10950739a78f54d0718d88fb5a868374603c084
Advisory 1
More Python Software Foundation vulnerabilities
- TI-2024-07037 Quadratic complexity parsing cookies with backslashes CVSS 3.1HIGH 7.5
- TI-2024-11791 Bypass extraction filter to modify file metadata outside extraction directory CVSS 3.1MEDIUM 5.3
- TI-2024-00411 Quoted zip-bomb protection for zipfile CVSS 3.1MEDIUM 6.2
- TI-2026-13296 `HTTPPasswordMgr` can send saved HTTPS credentials via HTTP because of incorrect scheme matching CVSS 4.0MEDIUM 6.0
- TI-2024-06422 Email header injection due to unquoted newlines CVSS 3.1MEDIUM 5.5
- TI-2026-04606 Possible to hijack modules in current working directory CVSS 4.0MEDIUM 5.6
Sources
- CVE-2025-13462 · CVE Program
- CVE-2025-13462 · NVD
- FIRST EPSS
- GHSA-9qpv-486p-2v4h · GitHub Advisory Database · CC BY 4.0
- CVE-2025-13462 · Red Hat security data · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences