CVE-2026-67615

openEQUELLA before 2026.1.0 contains an authenticated remote code execution vulnerability that allows any authenticated non-guest user to execute arbitrary code by exploiting Java deserialization in the HTTP invoker endpoint at /invoker/*. Attackers can bypass the class-name denylist enforced by PluginAwareObjectInputStream by nesting a serialized payload inside a java.security.SignedObject, causing the inner stream to be deserialized by a separate ObjectInputStream that does not apply the denylist, ultimately reaching a JNDI sink and enabling code execution.

• https://blog.evan.lat/posts/openeq
• https://github.com/openequella/openEQUELLA/releases/tag/2026.1.0
• https://github.com/openequella/openEQUELLA/security/advisories/GHSA-97gw-jwjx-fx9h
• https://www.vulncheck.com/advisories/openequella-authenticated-rce-via-java-deserialization-in-http-invoker