CVE-2016-3081

Command Injection in Apache Struts. CISA confirmed attackers exploit it and added it to its Known Exploited Vulnerabilities catalog on 8 October 2026.

Product
Apache Struts
Added to CISA's catalog
Federal fix-by date
Ransomware
No known use in ransomware campaigns

CISA’s description.

Apache Struts contains a command injection vulnerability that could allow remote attackers to execute arbitrary code via method:prefix when Dynamic Method Invocation is enabled.

Every flaw CISA confirmed exploited in the last 30 days is on the exploit watch. This is not security advice. Check the vendor’s advisory before acting. From CISA’s catalog of 4 November 2026.