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chore(deps): update dependency certifi to v2026.10.19 [security] - #18793
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This pull request updates the certifi dependency from version 2026.10.18 to 2026.10.19 across multiple requirements.txt files, including updating the corresponding package hashes. There are no review comments to address, and I have no additional feedback to provide.
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This PR contains the following updates:
==2026.10.18→==2026.10.19certifi 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 - G3root 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,urllib3andpip, 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:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:NReferences
This data is provided by the GitHub Advisory Database (CC-BY 4.0).
Release Notes
certifi/python-certifi (certifi)
v2026.10.19Compare Source
Configuration
📅 Schedule: (UTC)
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