---
title: "CVE-2011-1587\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-2011-1587?format=md
keywords: index, follow
---

# CVE-2011-1587

Publication date 27 April 2011

Last updated 4 August 2025

---

Ubuntu priority

**Medium**

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

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## Description

Cross-site scripting (XSS) vulnerability in MediaWiki before 1.16.4, when
Internet Explorer 6 or earlier is used, allows remote attackers to inject
arbitrary web script or HTML via an uploaded file accessed with a dangerous
extension such as .html located before a ? (question mark) in a query
string, in conjunction with a modified URI path that has a %2E sequence in
place of the . (dot) character. NOTE: this vulnerability exists because of
an incomplete fix for CVE-2011-1578.

[Read the notes from the security team](https://ubuntu.com/security/CVE-2011-1587?format=md#notes)

## Status

Show unmaintained releases

| Package | Ubuntu Release | Status |
| --- | --- | --- |
| mediawiki | 10.10 maverick | Not affected |
| 10.04 LTS lucid | Not affected |
| 9.10 karmic | Not affected |
| 8.04 LTS hardy | Not affected |
| 6.06 LTS dapper | Not affected |

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* [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

---

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

per Debian, not affected

## References

* [MITRE](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2011-1587)
* [NVD](https://nvd.nist.gov/vuln/detail/CVE-2011-1587)
* [Launchpad](https://launchpad.net/bugs/cve/CVE-2011-1587)
* [Debian](https://security-tracker.debian.org/tracker/CVE-2011-1587)

### Other references

* <https://www.cve.org/CVERecord?id=CVE-2011-1587>