CVE-2026-13346: pip would incorrectly handle doubly-encoded package URLs from indexes allowing for files to be installed to ar

Q: How do I fix CVE-2026-13346?

pip: upgrade to 26.2. Exact commands for each OS are on this page.

Q: Is CVE-2026-13346 being exploited?

CVE-2026-13346 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2026-13346 affect?

CVE-2026-13346 affects pip. Severity is medium (CVSS 6.5). 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

Q: How urgent is CVE-2026-13346?

Priority 28/100. No elevated risk signals yet.

Routine

MEDIUM 6.5UPGRADE

CVE-2026-13346 is a medium-severity flaw (CVSS 6.5) affecting pip. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

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

Why this priority

No elevated risk signals yet

A fixed release or distro patch exists.

Risk facts

CVSS score	6.5 (Medium)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	Required
EPSS exploit chance	0.3% (top 79%)
CISA exploited list	No
Weakness	CWE-36
Published	2026-07-29
Last modified	2026-10-24

Publisher (CNA): Python Software Foundation · Vendor: pypa

Last updated 2026-10-24 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2026-07-29 19:16 UTCPublished CVE record published
2026-10-24 13:10 UTCUpdated Record last modified

pypa pip UPGRADE

Affected: < 26.2

Fixed in: 26.2

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy pip || rpm -q pip || pip --version

2. UPGRADE to 26.2 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade pip

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade pip

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2026-13346?

pip: upgrade to 26.2. Exact commands for each OS are on this page.

Is CVE-2026-13346 being exploited?

CVE-2026-13346 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2026-13346 affect?

CVE-2026-13346 affects pip. Severity is medium (CVSS 6.5). 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

How urgent is CVE-2026-13346?

Priority 28/100. No elevated risk signals yet.

References

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