---
title: "CVE-2018-11776\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-2018-11776?format=md
keywords: index, follow
---

# CVE-2018-11776

Publication date 22 August 2018

Last updated 25 August 2025

---

Ubuntu priority

**Medium**

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

## Cvss 3 Severity Score

**8.1 · High**

[Score breakdown](https://ubuntu.com/security/CVE-2018-11776?format=md#impact-score)

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## Description

Apache Struts versions 2.3 to 2.3.34 and 2.5 to 2.5.16 suffer from possible
Remote Code Execution when alwaysSelectFullNamespace is true (either by
user or a plugin like Convention Plugin) and then: results are used with no
namespace and in same time, its upper package have no or wildcard namespace
and similar to results, same possibility when using url tag which doesn't
have value and action set and in same time, its upper package have no or
wildcard namespace.

## Status

Show unmaintained releases

| Package | Ubuntu Release | Status |
| --- | --- | --- |
| libstruts1.2-java | 18.04 LTS bionic | Not in release |
| 16.04 LTS xenial | Not in release |
| 14.04 LTS trusty | Not in release |

---

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

## Severity score breakdown

CVSS version:
CVSS v3.0

**Base score**

8.1 · High

* Base metrics

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

  | Parameter | Value |
  | --- | --- |
  | Base score | 8.1 · High |
  | Exploitability score | - |
  | Impact score | - |

**Vector:** CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

## References

* [MITRE](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-11776)
* [NVD](https://nvd.nist.gov/vuln/detail/CVE-2018-11776)
* [Launchpad](https://launchpad.net/bugs/cve/CVE-2018-11776)
* [Debian](https://security-tracker.debian.org/tracker/CVE-2018-11776)

### Other references

* <https://cwiki.apache.org/confluence/display/WW/S2-057>
* <http://www.securitytracker.com/id/1041547>
* <https://security.netapp.com/advisory/ntap-20180822-0001/>
* <https://www.cve.org/CVERecord?id=CVE-2018-11776>
* <https://www.cisa.gov/known-exploited-vulnerabilities-catalog>