CVE-2026-6357
Description
pip prior to version 26.1 would run self-update check functionality after installing wheel files which required importing well-known Python modules names. These module imports were intentionally deferred to increase startup time of the pip CLI. The patch changes self-update functionality to run before wheels are installed to prevent newly-installed modules from being imported shortly after the installation of a wheel package. Users should still review package contents prior to installation.
Predictions
Heuristic predictions, AS-IS, for prioritization only.
Mitigations
No mitigations published for this CVE yet.
The vendor-content worker queues fetches as references arrive (check back in a few minutes). Or — if you've already worked around this in production — publish your fix to the community-verified tier.
✚ Propose a mitigation on Community → Mitigations published via the community go through AI scoring + 2 human reviewers + 7-day silent objection window before landing here withsource_tier=community-verified.
OS impact
SUSE Affected 1 release
| Version | Status | Fixed in |
|---|---|---|
| — | Affected | — |
Debian Mixed 5 releases
| Version | Status | Fixed in |
|---|---|---|
| trixie | Affected | — |
| sid | Fixed | 26.1.1+dfsg-1 |
| forky | Fixed | 26.1.1+dfsg-1 |
| bullseye | Affected | — |
| bookworm | Affected | — |
References
- https://github.com/pypa/pip/pull/13923
- https://ichard26.github.io/blog/2026/04/whats-new-in-pip-26.1/#security-fixes
- http://www.openwall.com/lists/oss-security/2026/04/27/7
- https://nvd.nist.gov/vuln/detail/CVE-2026-6357
- https://github.com/pypa/pip/commit/b369bfc96cc524e00c267e1693290e6599c36bad
- https://github.com/pypa/pip
- https://www.suse.com/security/cve/CVE-2026-6357.html
- https://security-tracker.debian.org/tracker/CVE-2026-6357
- https://github.com/advisories/GHSA-jp4c-xjxw-mgf9
CWEs
CWE-829
Community-verified mitigations for this CVE will appear above when contributors publish them.
Verify integrity in audit chain (admin only). AS-IS.