---
id: CVE-2026-113730
title: >-
  OGNL stricter-invocation block list bypass via java.lang.reflect reflection
  proxies
summary: >-
  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.Metho…
severity: medium
cvss: 5.6
cvssVector: 'CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:L'
cvssSource: cna
cwe:
  - CWE-693
vendor: orphan-oss
product: ognl
affected:
  - ognl < 3.4.13
published: '2026-10-20'
updated: '2026-10-20'
sourceUpdated: '2026-10-20T21:24:24.093Z'
source: CVEORG
sourceUrl: 'https://www.cve.org/CVERecord?id=CVE-2026-113730'
references:
  - url: 'https://github.com/orphan-oss/ognl/security/advisories/GHSA-crwc-vw2r-qr6m'
    label: 'https://github.com/orphan-oss/ognl/security/advisories/GHSA-crwc-vw2r-qr6m'
  - url: >-
      https://github.com/orphan-oss/ognl/commit/16396fa4b560221294c2ab9ca04b76b161115e7d
    label: >-
      https://github.com/orphan-oss/ognl/commit/16396fa4b560221294c2ab9ca04b76b161115e7d
  - url: >-
      https://github.com/orphan-oss/ognl/commit/f4c17f794754d516ea799c36ed8524d1b7fb98e2
    label: >-
      https://github.com/orphan-oss/ognl/commit/f4c17f794754d516ea799c36ed8524d1b7fb98e2
  - url: 'https://github.com/orphan-oss/ognl/releases/tag/OGNL_3_4_13'
    label: 'https://github.com/orphan-oss/ognl/releases/tag/OGNL_3_4_13'
tags:
  - cve.org
ingestedAt: '2026-10-20T22:23:33.853Z'
---

## Overview

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.

## Affected

- `ognl < 3.4.13`

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.