pkgutil.get_data() does not enforce documented restrictions
Priority LOW 2CWE-22Published · Updated
Key facts
- Attack vector
- Physical
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Attack requirements
- None
- Impact type
- —
- Confidentiality · integrity · availability
- None · None · None
- Fix status
- Partial Red Hat: 1 fixed, 8 without a fix
Attack profile from CVSS 4.0 · CNA. Fix status from CNA and Red Hat.
Summary
DISPUTED: The project has clarified that the documentation was incorrect, and that pkgutil.get_data() has the same security model as open(). The documentation has been updated to clarify this point. There is no vulnerability in the function if following the intended security model. pkgutil.get_data() did not validate the resource argument as documented, allowing path traversals.
Why it matters now
Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00253 16th percentileScored 2026-11-07
Fix Partial CPython (Python Software Foundation): 3.13.13, 3.14.4, 3.15.0a8Red Hat: 6 advisoriesRed Hat: 1 fixed, 8 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 3.13.13; 3.14.0 to before 3.14.4; 3.15.0a1 to before 3.15.0a8 | 3.13.13, 3.14.4, 3.15.0a8 | Patch available | CNA |
- CPython VendorPython Software Foundation Affected before 3.13.13; 3.14.0 to before 3.14.4; 3.15.0a1 to before 3.15.0a8 Fixed in 3.13.13, 3.14.4, 3.15.0a8 Patch available CNA
CPE names Threatist (inferred) · 1
Inferred from how NVD named this product before; not given by a source.
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:python:python:*:*:*:*:*:*:*:* | — | — | python-pillow |
- cpe:2.3:a:python:python:*:*:*:*:*:*:*:* Versions — — ·python-pillow
Remediation
- Fix · CNA CPython (Python Software Foundation) Fixed in 3.13.13, 3.14.4, 3.15.0a8
Red Hat 6 advisories
- RHSA-2026:58420 Released 2026-08-21 · Red Hat rating ModerateRed Hat Hardened Images RPMs Security Update
- Red Hat Hardened Images python3.12-3.12.14-1.hum1@aarch64, python3.12-3.12.14-1.hum1@src, python3.12-3.12.14-1.hum1@x86_64 +12
- RHSA-2026:57660 Released 2026-08-20 · Red Hat rating ModerateRed Hat Hardened Images RPMs Security Update
- Red Hat Hardened Images python3.11-3.11.16-1.hum1@aarch64, python3.11-3.11.16-1.hum1@src, python3.11-3.11.16-1.hum1@x86_64 +12
- 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
Show 3 more Red Hat advisories
- 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
- 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 |
|---|---|---|
| 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 |
| Red Hat Hardened Images | Fixed | RHSA-2026:10118, RHSA-2026:11324, RHSA-2026:57660, RHSA-2026:58420, RHSA-2026:7443, RHSA-2026:7661 |
Timeline
- 2026-10-02 Threatist record created from CVE-2026-3479
- 2026-10-03 Alias added: GHSA-43rw-359f-4h89
- 2026-11-06 Affected versions changed · Red Hat
References
Patch 5
- https://github.com/python/cpython/pull/146122
- https://github.com/python/cpython/commit/bcdf231946b1da8bdfbab4c05539bb0cc964a1c7
- https://github.com/python/cpython/commit/5af6ce3e7b643a30a02d22245c1e3f4a8bc0a1fe
- https://github.com/python/cpython/commit/cf59bf76470f3d75ad47d80ffb8ce76b64b5e943
- https://github.com/python/cpython/commit/d786d59a8f7196bb630100a869f28ad13436b59c
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-2026-3479 · CVE Program
- CVE-2026-3479 · NVD
- FIRST EPSS
- GHSA-43rw-359f-4h89 · GitHub Advisory Database · CC BY 4.0
- CVE-2026-3479 · 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