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GeezerVison is showing github.com — Update dependency certifi to v2026 [SECURITY] by renovate[bot] · Pull Request #50 · protoconf/client-python

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@renovate

@renovate renovate Bot commented Oct 24, 2026 •
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This PR contains the following updates:

Package Change Age Confidence
certifi ==2024.7.4 → ==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

  • https://github.com/certifi/python-certifi/security/advisories/GHSA-6q48-6c7w-9gw2
  • https://discuss.python.org/t/information-for-python-users-regarding-emudhra-emsign-ca-certificate-security-incident/109576
  • https://emudhra.we-have-a-problem.com
  • https://github.com/advisories/GHSA-6q48-6c7w-9gw2

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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v2026.7.22

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v2026.6.17

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v2026.5.20

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v2026.4.22

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v2026.2.25

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v2026.1.4

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v2025.11.12

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v2025.10.5

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v2025.8.3

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v2025.7.14

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v2025.7.9

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v2025.6.15

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v2025.4.26

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v2025.1.31

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v2024.12.14

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v2024.8.30

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All reactions
@renovate renovate Bot changed the title Update dependency certifi to v2026 [SECURITY] Update dependency certifi to v2026 [SECURITY] - autoclosed Oct 26, 2026
@renovate renovate Bot closed this Oct 26, 2026
@renovate
renovate Bot deleted the renovate/pypi-certifi-vulnerability branch October 26, 2026 20:49
@renovate
Update dependency certifi to v2026 [SECURITY]
468e6cb
@renovate renovate Bot changed the title Update dependency certifi to v2026 [SECURITY] - autoclosed Update dependency certifi to v2026 [SECURITY] Nov 1, 2026
@renovate renovate Bot reopened this Nov 1, 2026
@renovate
renovate Bot force-pushed the renovate/pypi-certifi-vulnerability branch 2 times, most recently from 1421842 to 468e6cb Compare November 1, 2026 17:23
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