No. CVE-2016-3081
Old Apache Struts websites can be taken over remotely
Being used now
Yes. Attackers are using this right now.
Companies running websites built on Apache Struts, especially older ones.
What to do
Update Apache Struts to a supported version and turn off Dynamic Method Invocation.
Confirmed in attacksOct 8, 2026
ProductApache Struts
Attack likelihood, next 30 days97%
Attack likelihood is EPSS, a daily estimate from FIRST.org of how likely this bug is to be used in attacks in the next 30 days.
The official 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.
For your tech helper or AI assistant
A read-only checklist. Paste it into Claude, ChatGPT or a coding agent; it only looks and changes nothing.
Read-only check, change nothing, send nothing anywhere.
Is Apache Struts (CVE-2016-3081) installed or running on this machine or in this project?
1. Find every copy and its version (apps, packages, containers, lockfiles).
2. Compare each version against the vendor's fixed version for CVE-2016-3081. Quote the vendor page you used.
3. Report a table: where, version, fixed version, status (exposed / fixed / not installed / unsure).
4. List the exact update steps, but do not run them.