CVE-2026-93493 Security feature bypass in Red Hat build of Apache Camel for Spring Boot 4
Attackers can bypass certificate validation by sending OCSP responses without the nextUpdate field, allowing unvalidated certificates to be accepted.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2026-93493?
CVE-2026-93493 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 `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 applications proceeding with an unvalidated certificate. This can result in a bypass of security controls where certificate validation is expected.
Weakness: CWE-299
Which versions are affected by CVE-2026-93493?
How do I fix CVE-2026-93493?
Apply the vendor's patch.
Is CVE-2026-93493 being exploited?
There is no known exploitation of CVE-2026-93493 in the wild and no public exploit code.
Sources
Also known as DEBIAN-CVE-2026-93493, GHSA-9rhx-p462-pg2j, UBUNTU-CVE-2026-93493.