CVE-2026-13346
Last modified
CVE-2026-13346 is a medium-severity vulnerability rated 6.5/10 on the CVSS scale. 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.. EPSS estimates a 0.35% chance of exploitation in the next 30 days.
Description
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.
Metrics
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Pypa | Pip | < 26.2 |
References
- https://github.com/pypa/pip/pull/14110Issue Tracking, Patch
- https://mail.python.org/archives/list/security-announce@python.org/thread/L2BNQGGVQCEV7DROOORQ7WFKKFF2OOQX/Mailing List, Third Party Advisory
- https://www.openwall.com/lists/oss-security/2026/07/29/7Mailing List, Third Party Advisory
Timeline
- Published
- Last Modified
- Status
- Analyzed
Frequently Asked Questions
What is CVE-2026-13346?
How severe is CVE-2026-13346?
How do I fix CVE-2026-13346?
How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
- Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
- PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
- AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.
Related CVEs from 2026
- CVE-2026-13340The SVG Support WordPress plugin before 2.5.17 does not appl…6.1
- CVE-2026-13341A vulnerability exists in the Kong Konnect Model Context Pro…7.4
- CVE-2026-13342The Security Optimizer WordPress plugin from 1.5.8 to 1.6.4 …5.3
- CVE-2026-13343The UMP Stream responder library in lib/midi2/ump_stream_res…5.3
- CVE-2026-13344The Essential Addons for Elementor WordPress plugin before …4.8
- CVE-2026-13345The Essential Addons for Elementor WordPress plugin before …5.3
- CVE-2026-13347The Hide My WP Lite plugin for WordPress is vulnerable to Ar…7.5
- CVE-2026-13348CWE-307: Improper Restriction of Excessive Authentication At…6.9
- CVE-2026-1335An Out-Of-Bounds Write vulnerability affecting the EPRT file…7.8
- CVE-2026-13350Permissions where checked incorrectly during room creation, …2.3
- CVE-2026-13351Zephyr's IPv6 network stack can be prevented from receiving …7.5
- CVE-2026-13352The Paid Membership Plugin, Ecommerce, User Registration For…8.8
Are you affected by CVE-2026-13346?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST