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chore(deps): [PYTHON] Update dependency certifi to v2026.10.18 [SECURITY] - #231

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renovate/python-pypi-certifi-vulnerability
Nov 10, 2026
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peku33 merged 1 commit into
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renovate/python-pypi-certifi-vulnerability

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@renovate renovate Bot commented Nov 9, 2026

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This PR contains the following updates:

Package Change Age Confidence
certifi 2026.7.22 → 2026.10.18 age confidence

certifi bundles emSign root CAs with compromised intermediate CA keys

GHSA-6q48-6c7w-9gw2

More information

Details

Certifi versions before 2026.10.18 include the emSign ECC Root CA - G3 root certificate in their bundled CA store. Eight eMudhra intermediate CA certificates that chain to this root have compromised private keys and the CA has revoked them.

An attacker with one of the compromised keys can issue valid-looking certificates for any hostname. If the attacker is also on-path, they can intercept or modify TLS traffic from clients that trust the certifi bundle. Examples include requests, urllib3 and pip, and the Python.org macOS installer.

Certifi 2026.10.18 removed all emSign roots from the bundle. Certifi 2026.10.19 restored the emSign roots that are not affected. Upgrade to 2026.10.19 or later, and rebuild container images that vendor certifi.

Severity

  • CVSS Score: 9.1 / 10 (Critical)
  • Vector String: CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N

References

This data is provided by the GitHub Advisory Database (CC-BY 4.0).


Release Notes

certifi/python-certifi (certifi)

v2026.10.18

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@renovate
renovate Bot requested a review from a team as a code owner November 9, 2026 23:38
@peku33
peku33 merged commit 7267f5c into master Nov 10, 2026
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@peku33
peku33 deleted the renovate/python-pypi-certifi-vulnerability branch November 10, 2026 10:13
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