CVE-2026-42791

A flaw was found in Erlang OTP's publickey application, specifically in the Online Certificate Status Protocol OCSP response verification. A remote attacker who has obtained the private key of an expired Certificate Authority CA-designated OCSP responder certificate can forge OCSP responses. This...

CVE-2026-42791 OCSP responder certificate validity period not checked in public_key

Improper Certificate Validation vulnerability in Erlang OTP publickey pubkeyocsp module allows forged OCSP responses signed with an expired responder certificate to be accepted as valid. OCSP response verification in pubkeyocsp:verifyresponse/5 and pubkeyocsp:isauthorizedresponder/3 in...

PT-2026-43713

Name of the Vulnerable Software and Affected Versions Erlang OTP versions 27.0 through 27.3.4.11 Erlang OTP versions prior to 28.5.0.1 Erlang OTP versions prior to 29.0.1 public key versions 1.16 through 1.17.1.2 public key versions prior to 1.20.3.1 public key versions prior to 1.21.1 Descriptio...