CVE-2026-93578 Security feature bypass in Red Hat build of Apache Camel for Spring Boot 4
Attackers can bypass certificate revocation checks by forging OCSP responses, allowing revoked certificates to be accepted by applications using Netty.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2026-93578?
CVE-2026-93578 is a medium-severity vulnerability in Red Hat build of Apache Camel for Spring Boot 4, published on 18 Sep 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
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 forging 'GOOD' OCSP responses for revoked certificates. This bypasses certificate revocation checks, allowing applications using Netty's OCSP Client to accept certificates that should have been revoked, leading to an authorization bypass.
Weakness: CWE-1035
Which versions are affected by CVE-2026-93578?
How do I fix CVE-2026-93578?
Upgrade to a fixed version.
Is CVE-2026-93578 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-93578 exists.
Sources
Also known as DEBIAN-CVE-2026-93578, GHSA-4wrp-2fvc-9x8r, UBUNTU-CVE-2026-93578.