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 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.

CVSS v3 6.5 MEDIUM

6.5^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 2.8 / Impact : 3.6

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction REQUIRED

Confidentiality Impact NONE

Integrity Impact HIGH

Availability Impact NONE

Scope UNCHANGED

References

Link	Resource
https://github.com/pypa/pip/pull/14110	Issue Tracking Patch
https://mail.python.org/archives/list/security-announce@python.org/thread/L2BNQGGVQCEV7DROOORQ7WFKKFF2OOQX/	Mailing List Third Party Advisory
http://www.openwall.com/lists/oss-security/2026/07/29/7	Mailing List Third Party Advisory

Configurations

Configuration 1 (hide)

cpe:2.3:a:pypa:pip:*:*:*:*:*:*:*:*

History

No history.

Information

Published : 2026-07-29 19:16

Updated : 2026-08-20 13:17

NVD link : CVE-2026-13346

Mitre link : CVE-2026-13346

CVE.ORG link : CVE-2026-13346

JSON object : View

Products Affected

pypa

pip

CWE

CWE-36

Absolute Path Traversal

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