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Advisories

openEQUELLA < 2026.1.0 Authenticated RCE via Java Deserialization in HTTP Invoker

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severity
high
date
Affecting

  • openEQUELLA < 2026.1.0

CWE
  • CWE-502 Deserialization of Untrusted Data
  • CWE-184 Incomplete List of Disallowed Inputs
CVSS
8.7
CVSS V4 Vector
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
References
Credit
evan
Description
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.

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