CVE-2026-3479pkgutil.get_data() does not enforce documented restrictions
Updated under an hour ago ()
Does this affect you?
It affects Python Software Foundation CPython. Add what you run to find out whether that includes you.
No exploitation reported and no EPSS estimate yet.
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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.
- CVSS
- 0.0 NONE (v4.0, CNA)CVSS:4.0/AV:P/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:N/SC:N/SI:N/SA:N
- Weakness (CWE)
- CWE-22
- 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
- Awaiting Analysis
- Record last updated
- Apr 7, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
Python Software Foundation CPython python_software_foundation:cpython (from the name) | before 3.13.13; from 3.14.0 before 3.14.4; from 3.15.0a1 before 3.15.0a8 | CNA record |
References
- https://github.com/python/cpython/pull/146122patch
- https://mail.python.org/archives/list/security-announce@python.org/thread/WYLLVQOOCKGK73JM7Z7ZSNOJC4N7BAWY/vendor-advisory
- https://github.com/python/cpython/issues/146121issue-tracking
- https://github.com/python/cpython/commit/bcdf231946b1da8bdfbab4c05539bb0cc964a1c7patch
- https://github.com/python/cpython/commit/5af6ce3e7b643a30a02d22245c1e3f4a8bc0a1fepatch
- https://github.com/python/cpython/commit/cf59bf76470f3d75ad47d80ffb8ce76b64b5e943patch
- https://github.com/python/cpython/commit/d786d59a8f7196bb630100a869f28ad13436b59cpatch
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.