Apache Camel security advisory

CVE-2026-85247

Camel-Knative: improper certificate validation - enabling SSL without configuring a truststore fell back to trusting every certificate, so turning TLS on was the thing that turned certificate validation off

Description

When SSL was enabled on the Knative HTTP client but no truststore was configured, the client options fell back to trusting every presented certificate rather than to the JVM's default trust anchors. A deployment that switched TLS on without also configuring a truststore therefore obtained an encrypted connection with no peer authentication, which an attacker positioned on the network path can terminate and read. The dangerous state is reached by omission rather than by an explicit opt-in, which is what makes it a framework defect: turning TLS on should not be the thing that turns certificate validation off.

Mitigation

Upgrade to Apache Camel 4.23.0, which fixes the issue. Users on the 4.18.x LTS releases stream should upgrade to 4.18.5. Users on the 4.22.x LTS releases stream should upgrade to 4.22.1. With no truststore configured the trust options are now left unset so the JVM default trust anchors apply, the same fallback SSLContextParameters and the rest of Camel use. Trusting every certificate is now reached only by asking for it explicitly through the trust.all property, which remains available for development against a cluster with a self-signed certificate. For deployments that cannot upgrade immediately, configure a truststore explicitly wherever SSL is enabled. After upgrading, a deployment that was relying on the implicit trust-all behaviour must either configure a truststore or set the trust.all property deliberately.

Credit

This issue was discovered by Claude Security Scan Tool

Notes

The JIRA ticket: https://issues.apache.org/jira/browse/CAMEL-24443 refers to the various commits that resolved the issue, and has more details.

The fix was merged on main in https://github.com/apache/camel/pull/25824 (commit 26c899d818b8f33732da3678ae00de6af351b622), backported to camel-4.22.x in https://github.com/apache/camel/pull/25944 (commit 95b4c1500001bc32877df5b8fca0bc7bdd080666) and to camel-4.18.x in https://github.com/apache/camel/pull/25946 (commit 4ec9b37d70b08c478966000fb1bd653abfe410e3).

The issue is classified as CWE-295 Improper Certificate Validation. The camel-4.14.x line reached end of life before this fix and does not receive it; deployments on 4.14.x should move to 4.18.5 or later.

References

CVE-2026-85247.txt.asc — PGP signed advisory data cve.org/CVERecord?id=CVE-2026-85247