Severity: moderate
Affected versions:
- Apache Struts 2.0.0 through 2.3.37
- Apache Struts 2.5.0 through 2.5.33
- Apache Struts 6.0.0 through 6.11.0
- Apache Struts 7.0.0 through 7.3.0
Description:
Improper neutralization of special elements used in an expression language
statement ('Expression Language Injection') vulnerability in Apache Struts. If
the application is configured to use the legacy RESTful action mapper, a
crafted request can inject an OGNL expression that may lead to remote code
execution. Struts 7 is affected only when the OGNL allowlist is disabled; it is
enabled by default. Applications using the default action mapper, the restful2
mapper, or the Struts REST plugin are not affected.
This issue affects Apache Struts: from 2.0.0 through 2.3.37, from 2.5.0 through
2.5.33, from 6.0.0 through 6.11.0, from 7.0.0 through 7.3.0.
Users are recommended to upgrade to version 6.12.0 or 7.4.0, which fixes the
issue.
Credit:
LeaveSong (finder)
References:
https://cwiki.apache.org/confluence/display/WW/S2-075
https://struts.apache.org/
https://www.cve.org/CVERecord?id=CVE-2026-104711
