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.
Fix
Patch, vendor advisory and mitigation references on NVD 1
- https://github.com/openequella/openEQUELLA/releases/tag/2026.1.0 release-notes, patch
Every line above is quoted from NVD, CISA, Microsoft, the vendor's own advisory or DISA; nothing is generated.
Change history 1
- First seenCVSS 8.7 · apereo foundationNVD modified 2026-10-29 12:26
Affected (CPE criteria) 0
NVD has not attached CPE configurations yet.
References 4
- https://blog.evan.lat/posts/openeq technical-description, exploit
- https://github.com/openequella/openEQUELLA/releases/tag/2026.1.0 release-notes, patch
- https://github.com/openequella/openEQUELLA/security/advisories/GHSA-97gw-jwjx-fx9h vendor-advisory
- https://www.vulncheck.com/advisories/openequella-authenticated-rce-via-java-deserialization-in-http-invoker third-party-advisory