CVE-2016-4461

Severity: high (CVSS 8.8 v3.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 8.1% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2017-10-16 · updated 2026-06-17
Weakness: CWE-20

Description

Apache Struts 2.x before 2.3.29 allows remote attackers to execute arbitrary code via a "%{}" sequence in a tag attribute, aka forced double OGNL evaluation. NOTE: this vulnerability exists because of an incomplete fix for CVE-2016-0785.

Affected products

Apache Struts: from 2.0.0 before 2.3.29 — fixed in 2.3.29
NetApp Oncommand Balance: all versions

How to fix

Upgrade to a fixed version: Apache Struts 2.3.29. Check the vendor advisory for mitigations.

References

http://www.securityfocus.com/bid/91277
https://security.netapp.com/advisory/ntap-20180629-0004/
https://struts.apache.org/docs/s2-036.html
http://www.securityfocus.com/bid/91277
https://security.netapp.com/advisory/ntap-20180629-0004/
https://struts.apache.org/docs/s2-036.html

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