---
title: "CVE-2016-3087\n    | Ubuntu"
description: Ubuntu is an open source software operating system that runs from the
  desktop, to the cloud, to all your internet connected things.
url: https://ubuntu.com/security/CVE-2016-3087?format=md
keywords: index, follow
---

# CVE-2016-3087

Publication date 7 June 2016

Last updated 25 August 2025

---

Ubuntu priority

**Medium**

[Why this priority?](https://ubuntu.com/security/cves/about#priority )

## Cvss 3 Severity Score

**9.8 · Critical**

[Score breakdown](https://ubuntu.com/security/CVE-2016-3087?format=md#impact-score)

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## Description

Apache Struts 2.3.19 to 2.3.20.2, 2.3.21 to 2.3.24.1, and 2.3.25 to 2.3.28,
when Dynamic Method Invocation is enabled, allow remote attackers to
execute arbitrary code via vectors related to an ! (exclamation mark)
operator to the REST Plugin.

[Read the notes from the security team](https://ubuntu.com/security/CVE-2016-3087?format=md#notes)

## Status

Show unmaintained releases

| Package | Ubuntu Release | Status |
| --- | --- | --- |
| libstruts1.2-java | 16.04 LTS xenial | Not in release |
| 15.10 wily | Not in release |
| 14.04 LTS trusty | Not in release |
| 12.04 LTS precise | Not affected |

---

* [How can I get the fixes?](https://ubuntu.com/security/cves/about#security)
* [What do statuses mean?](https://ubuntu.com/security/cves/about#statuses)

## Notes

---

### [sbeattie](https://launchpad.net/~sbeattie)

struts 2.x only

## Severity score breakdown

CVSS version:
CVSS v3.0

**Base score**

9.8 · Critical

* Base metrics

  | Parameter | Value |
  | --- | --- |
  | Attack vector | Network |
  | Attack complexity | Low |
  | Privileges required | None |
  | User interaction | None |
  | Scope | Unchanged |
  | Confidentiality impact | High |
  | Integrity impact | High |
  | Availability impact | High |
* Scores

  | Parameter | Value |
  | --- | --- |
  | Base score | 9.8 · Critical |
  | Exploitability score | - |
  | Impact score | - |

**Vector:** CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

## References

* [MITRE](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-3087)
* [NVD](https://nvd.nist.gov/vuln/detail/CVE-2016-3087)
* [Launchpad](https://launchpad.net/bugs/cve/CVE-2016-3087)
* [Debian](https://security-tracker.debian.org/tracker/CVE-2016-3087)

### Other references

* <https://struts.apache.org/docs/s2-033.html>
* <https://www.cve.org/CVERecord?id=CVE-2016-3087>