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CVE-2026-113730

5.6 medium SSVC exploitation: none Awaiting Analysis
NVD · CVE.org

OGNL is an Object Graph Navigation Library for Java. Prior to 3.4.13, the optional stricter-invocation mode in OgnlRuntime.invokeMethod checks the declaring class of the method that OGNL invokes but does not block java.lang.reflect.Method, java.lang.reflect.Constructor, or java.lang.reflect.Field. An attacker-controlled expression can invoke one of these reflection objects as a proxy for a method on a blocked class, causing the real operation to execute inside JDK reflection without passing through the stricter-invocation check again. Exploitation requires an application to evaluate untrusted OGNL expressions, use the default or an equivalently permissive MemberAccess that permits reflection, and rely on stricter invocation as a sandbox. Applications using a restrictive MemberAccess, including Apache Struts with SecurityMemberAccess, are not affected by this bypass. This issue is fixed in 3.4.13.

Fix

Nothing published yet: no patch, vendor advisory or mitigation reference on NVD, no vendor advisory in the News for this CVE, not in CISA's KEV, no fixed package version. BaselineWatch does not guess at one.

Change history 5

  1. StatusPublished → Awaiting AnalysisNVD modified 2026-10-22 17:29
  2. StatusReceived → PublishedNVD modified 2026-10-21 15:51
  3. StatusPublished → ReceivedNVD modified 2026-10-21 16:17
  4. StatusReceived → PublishedNVD modified 2026-10-20 21:24
  5. First seenCVSS 5.6NVD modified 2026-10-20 22:19

Affected (CPE criteria) 0

NVD has not attached CPE configurations yet.

References 4