MEDIUM 5.6 NVD
CVE-2026-13346
pip would incorrectly handle doubly-encoded package URLs from indexes allowing for files to be installed to arbitrary locations on disk even when installing whe
pip would incorrectly handle doubly-encoded package URLs from indexes allowing for files to be installed to arbitrary locations on disk even when installing wheels.
This vulnerability requires downloading or installing a package from a malicious package index to succeed, malicious packages alone are not able to exploit this vulnerability. Note that this vulnerability only materially impacts users running `pip download` with the `--only-binary` option as installing source distributions from an untrusted index is already an unsafe operation that executes code during install time.
References
- https://github.com/pypa/pip/pull/14110
- https://mail.python.org/archives/list/security-announce@python.org/thread/L2BNQGGVQCEV7DRO
- http://www.openwall.com/lists/oss-security/2026/07/29/7
- https://www.openwall.com/lists/oss-security/2026/07/29/7
This medium severity vulnerability with a CVSS score of 5.6 was published on 2026-07-29 via NVD.
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