Is there a public exploit for CVE-2026-13346?

No public exploit for CVE-2026-13346 was found in Exploit-DB, Metasploit, Nuclei templates or public proof-of-concept repositories. That is an absence of evidence rather than proof that none exists.

How severe is CVE-2026-13346?

CVE-2026-13346 scores CVSS 5.6 (v4.0), rated medium. EPSS puts the chance of exploitation in the next 30 days at 0.29%.

What does CVE-2026-13346 affect?

CVE-2026-13346 affects Python Packaging Authority pip.

5.6 Medium

pip would incorrectly handle doubly-encoded package URLs from indexes allowing for files to be installed to arbitrary locations on disk…

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.

Assessment

CVSS: 5.6 (v4.0)
Severity: Medium
EPSS: 0.29% chance of exploitation in the next 30 days
Known exploited: Not listed in CISA KEV
Exploit availability: Nothing found in Exploit-DB, Metasploit, Nuclei or public PoC repositories
Published: 29 July 2026
Last updated: 24 October 2026
Affected: Python Packaging Authority · pip
Weakness: CWE-36
Assigner: cna@python.org

CVSS vectorCVSS:4.0/AV:N/AC:H/AT:P/PR:H/UI:A/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N

At the source

References

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