Medium 5.6Published Oct 20, 2026

CVE-2026-113730OGNL stricter-invocation block list bypass via java.lang.reflect reflection proxies

Updated under an hour ago (Oct 28, 2026, 11:30 AM ET)

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It affects orphan-oss ognl. Add what you run to find out whether that includes you.

No exploitation reported and no EPSS estimate yet.

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Every CVE for orphan-oss ognl

Exploited in the last 30 days

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.

CVSS: 5.6 MEDIUM (v3.1, CNA)CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:L
Weakness (CWE): CWE-693
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: GitHub_M
NVD analysis: Awaiting Analysis
Record last updated: Oct 21, 2026
First seen by InfoSec Signals: Oct 20, 2026

Affected products

Affected products

orphan-oss ognl orphan_oss:ognl (from the name)	before 3.4.13	CNA record

References

References

https://github.com/orphan-oss/ognl/security/advisories/GHSA-crwc-vw2r-qr6m	x-refsource-confirm
https://github.com/orphan-oss/ognl/commit/16396fa4b560221294c2ab9ca04b76b161115e7d	x-refsource-misc
https://github.com/orphan-oss/ognl/commit/f4c17f794754d516ea799c36ed8524d1b7fb98e2	x-refsource-misc
https://github.com/orphan-oss/ognl/releases/tag/OGNL_3_4_13	x-refsource-misc

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.