Security fix · CVE-2026-113730
OGNL is an Object Graph Navigation Library for Java.
Published Oct 20, 2026 · catalog updated Oct 21, 2026 · OGNL is an Object
Last checked Nov 6, 2026. A connected source was read within the last 7 days.
Check if you run it
No confirmed exploitation is on record for CVE-2026-113730. EPSS is 0.39%. Act only if a listed version of OGNL is an Object is installed.
Gaps on this record
- The stored product name is a package slug. The name on this page is taken from the title (OGNL is an Object).
- No vendor fix or required action is stored. Compare the linked advisory before you change production.
- Severity
- Medium5.6
- Known exploitation
- Not in CISA/VulnCheck KEV
- EPSS
- 0.39%
- Remediation
- Version ranges on file
- Affected products
- Maven ognl:ognl · maven ognl · maven ognl:ognl
### Summary OGNL's optional *stricter invocation* mode maintains a block list that prevents expressions from directly calling methods on dangerous classes such as , , and . The block list filters on the **declaring class of the method OGNL invokes**. Because (and / ) are not on the list, an expression can use reflection as a proxy — — to reach a blocked method. The real call (e.g. ) then executes inside the JDK reflection machinery and never passes back through OGNL's , so the block list never sees it. ### Proof of concept Under the default OGNL context (public-only access, stricter invocation enabled), the following expression creates a file even though a direct is blocked: ### Impact and scope — please read carefully **This is hardening of a defense-in-depth secondary layer, not a break of OGNL's primary security boundary.** In OGNL the stricter-invocation block list is a *secondary* mitigation. The **primary** access-control gate is the implementation supplied by the integrating framework or application, which OGNL consults on every constructor and method call. Frameworks that evaluate untrusted expressions are expected to install a restrictive — for example, Apache Struts' , which excludes dangerous classes and the package. Against such a this PoC is blocked at the very first step (the constructor), before reflection is ever reachable. The default context that ships with OGNL intentionally allows all public members and is **not** designed to sandbox untrusted input. An application that evaluates attacker-controlled expressions with that permissive default already has many paths to code execution, and this technique is not required to achieve it. **You are affected only if all of the following hold:** (1) your application evaluates untrusted/attacker-controlled OGNL expressions, (2) it uses OGNL's default permissive (or an equivalently permissive one that allows ), and (3) it relies on the stricter-invocation block list as its sandbox. **Properly configured consu
Are you affected?
Enter the version you run. The result uses only the ranges stored on this record.
The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.
- Maven ognl:ognl0 → 3.4.13
- maven ognlversion unspecified
- maven ognl:ognl<= 3.4.12
How to fix CVE-2026-113730
Upgrade
CVE-2026-113730 lists a fix boundary at 3.4.13. Compare the installed build with that boundary before you change production.
Version check
Affected <= 3.4.12
Advisory
Open the cve_org record and follow its fix.
Official advisories
What to do
Three questions, each answered from this record only. Confirm the vendor advisory before you patch.
Should you patch?
No confirmed exploitation is on record for CVE-2026-113730. EPSS is 0.39%. Act only if a listed version of OGNL is an Object is installed.
Which versions are affected?
Compare what you have installed with 0 → 3.4.13, <= 3.4.12. Compare the installed version with the linked vendor advisory before you change production.
What should an analyst verify?
CWE-693: Protection Mechanism Failure. EPSS 0.39%. There is no CISA KEV listing. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.
Code
The project this record applies to. Exploit listings stay in References.
Timeline
Detection, updates, and resolution for this record.
Oct 20, 2026 · NIST NVD
Detected
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
Oct 21, 2026 · NIST NVD
Updated
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
Oct 21, 2026 · GitHub Advisory Database
Fix available
ognl:ognl fixed in 3.4.13
Oct 21, 2026 · GitHub Advisory Database
Fix available
ognl:ognl fixed in 3.4.13
Oct 21, 2026 · GitHub Advisory Database
Updated
### Summary OGNL's optional *stricter invocation* mode maintains a block list that prevents expressions from directly calling methods on dangerous classes such as , , and . The block list filters on the **declaring class of the method OGNL invokes**. Because (and / ) are not on the list, an expression can use reflection as a proxy — — to reach a blocked method. The real call (e.g. ) then executes
Sources
- CVE.orgVulnerability recordCVE-2026-113730
Official CVE identifier
cve.org - FIRST EPSSExploitation probabilityCVE-2026-113730
30-day exploitation probability 0.39%
first.org - GitHub Advisory DatabasePackage advisoryGHSA-crwc-vw2r-qr6m
GitHub Advisory Database record mirrored by OSV.
github.com - GitLab Advisory DatabasePackage advisoryCVE-2026-113730
OGNL's optional stricter invocation mode maintains a block list that prevents expressions from directly calling methods on dangerous classes such as Runtime, ProcessBuilder, and ClassLoader. The block list filters on the declaring class of the method OGNL invokes. Because java.lang.reflect.Method (and Constructor/Field) are not on the list, an expression can use reflection as a proxy — someMethod.
advisories.gitlab.com - NIST NVDVulnerability recordCVE-2026-113730
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.l
nvd.nist.gov - OpenSSF OSV / OSV ScannerPackage advisoryGHSA-crwc-vw2r-qr6m
OGNL stricter-invocation block list bypass via java.lang.reflect reflection proxies
osv.dev
References
Freshness
Last verified in this catalog Nov 6, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.
- FIRST EPSSNov 6, 2026
- GitHub Advisory DatabaseOct 26, 2026
- OpenSSF OSV / OSV ScannerOct 26, 2026
- GitLab Advisory DatabaseOct 23, 2026
- CVE.orgOct 21, 2026
- NIST NVDOct 21, 2026