CVE-2026-93578 Io.netty/netty-handler-ssl-ocsp: netty: missing extended key usage (eku) check in ocsp client allows certificate revocation bypass

A flaw was found in Netty's Online Certificate Status Protocol OCSP Client. The client fails to verify the 'id-kp-OCSPSigning' Extended Key Usage EKU in OCSP responder certificates. A remote attacker, holding any valid certificate issued by the same Certificate Authority CA, can exploit this by...

CVE-2026-93578

CVE-2026-93578 affects the Netty library, specifically the netty-handler-ssl-ocsp module. The vulnerability stems from a missing Extended Key Usage (EKU) check in the OCSP client, which allows an attacker to perform a certificate revocation bypass . An OCSP response signed with a certificate lack...

CVE-2026-93493

CVE-2026-93493 affects Netty's netty-handler-ssl-ocsp component. The flaw is in OCSP certificate validation: when a remote attacker supplies an OCSP response that omits the optional nextUpdate field, the validation is silently skipped , causing the application to proceed with an unvalidated certi...

CVE-2026-93493 Io.netty/netty-handler-ssl-ocsp: netty: ocsp validation silently skipped when a response omits the optional nextupdate field

A flaw was found in Netty's netty-handler-ssl-ocsp component. A remote attacker can exploit this vulnerability by providing an Online Certificate Status Protocol OCSP response that omits the optional nextUpdate field. This omission causes the OCSP validation to be silently skipped, leading to...

EUVD-2026-82770

A flaw was found in Netty's netty-handler-ssl-ocsp component. A remote attacker can exploit this vulnerability by providing an Online Certificate Status Protocol OCSP response that omits the optional nextUpdate field. This omission causes the OCSP validation to be silently skipped, leading to...

CVE-2026-93493

A flaw was found in Netty's netty-handler-ssl-ocsp component. A remote attacker can exploit this vulnerability by providing an Online Certificate Status Protocol OCSP response that omits the optional nextUpdate field. This omission causes the OCSP validation to be silently skipped, leading to...