5.3

CVE-2026-6357: pip maintainers pip

CVSS: 5.3v4.0MediumAwaiting analysis
AliasesGHSA-jp4c-xjxw-mgf9PYSEC-2026-2876UBUNTU-CVE-2026-6357
Published 27-04-2026Last modified 27-04-2026
Open JSON

Vulnerability summary

CVE-2026-6357 is a medium (CVSS 5.3) vulnerability in pip maintainers pip. EPSS estimates a 0.17% chance of exploitation in the next 30 days, higher than 6% of scored vulnerabilities.

Overall risk
21/100
0100
Low · default modelHow is this calculated?
CVSS score
5.3/10
010
Medium · v4.0 (CVE.org)
EPSS score
0.17%
0%100%
Low · +0.03 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 16 · Related 16
RHSA-2026:48788SUSE-SU-2026:22018-1SUSE-SU-2026:2387-1SUSE-SU-2026:2634-1SUSE-SU-2026:2664-1SUSE-SU-2026:2758-1

Timeline

  1. 27-04-2026
    PublishedVulnerability first disclosed.
  2. 27-04-2026
    Last modifiedVulnerability information updated.

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.

CVSS metrics

7 scores · 7 sources · 1 version

EPSS trend

Probability

0.17%

Chance of exploitation in the next 30 days

Percentile

6%

Versus all other CVEs

30-day change

+0.03 pp

From 0.14% on 20-09-2026

20-09-202620-10-2026
EPSS score
0.17%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Chainguard69 products
  • ansible-operator< 1.42.2-r5
  • ansible-operator-fips< 1.42.2-r5
  • bazel-module-rules_python-1.6.0All versions (No fix recorded)
  • datadog-agent-7.71< 7.71.2-r22
  • datadog-agent-7.71-core-integrations< 7.71.2-r22
Wolfi32 products
  • datadog-agent-7.72< 7.72.4-r22
  • datadog-agent-7.72-core-integrations< 7.72.4-r22
  • datadog-agent-7.73< 7.73.3-r13
  • datadog-agent-7.73-core-integrations< 7.73.3-r13
  • datadog-agent-7.74< 7.74.1-r15
Debian1 product
  • python-pipAll versions (No fix recorded) | < 26.1.1+dfsg-1
Pip maintainers1 product
PyPI1 product
  • pip< 26.1
Ubuntu1 product
  • python-pipAll versions (No fix recorded)

6 vendors · 105 products

References

12 links
Show all 12 references