Is CVE-2026-6357 in the CISA KEV catalog?

No. CVE-2026-6357 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the EPSS score for CVE-2026-6357?

CVE-2026-6357 has an EPSS score of 0.14% (4th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2026-6357?

Upgrade python-pip on debian unstable to 26.1.1+dfsg-1 or later.

CVE & CISA-KEV Catalog

CVE-2026-6357

UNSCORED

NVD

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.

CWE-829

How to fix

Remediation Available

python-pipDebian

Fixed in:26.1.1+dfsg-1CVE-2026-6357

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3.1 Vector

No CVSS vector data available.

Exploit Intelligence

0.14%probability of exploitation in 30 days

4thpercentile

Low risk: more likely to be exploited than 4% of all known CVEs.

References

Other references3

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2026-04-27.