certifi bundles emSign root CAs with compromised intermediate CA keys

影響: pip:certifi >= 2019.03.09, < 2026.10.19 → 2026.10.19

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 p…

GitHub Advisory Databaseで読む

2026/10/21 04:35、GitHub Advisory Databaseが「certifi bundles emSign root CAs with compromised intermediate CA keys」を公開しました (種別: 脆弱性アドバイザリ)。重大度は「緊急」(critical) です。関連する技術: Python。