CVE-2013-2135

Severity: critical (CVSS 9.3 v2.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 13.8% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2013-07-16 · updated 2026-06-16
Weakness: CWE-94

Description

Apache Struts 2 before 2.3.14.3 allows remote attackers to execute arbitrary OGNL code via a request with a crafted value that contains both "${}" and "%{}" sequences, which causes the OGNL code to be evaluated twice.

Affected products

Apache Struts: from 2.0.0 before 2.3.14.3 — fixed in 2.3.14.3

How to fix

Upgrade to a fixed version: Apache Struts 2.3.14.3. Check the vendor advisory for mitigations.

References

http://struts.apache.org/development/2.x/docs/s2-015.html
http://www.oracle.com/technetwork/topics/security/cpujan2014-1972949.html
http://www.oracle.com/technetwork/topics/security/cpuoct2013-1899837.html
http://www.securityfocus.com/bid/64758
https://cwiki.apache.org/confluence/display/WW/S2-015
http://struts.apache.org/development/2.x/docs/s2-015.html
http://www.oracle.com/technetwork/topics/security/cpujan2014-1972949.html
http://www.oracle.com/technetwork/topics/security/cpuoct2013-1899837.html
http://www.securityfocus.com/bid/64758
https://cwiki.apache.org/confluence/display/WW/S2-015

Get alerted when CVE-2013-2135 or the next vulnerability affects your stack