CVE-2013-1951 Cross-site scripting in MediaWiki

What is CVE-2013-1951?

CVE-2013-1951 is a medium-severity cross-site scripting vulnerability in Debian Debian Linux, published on 31 Oct 2019. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.

Official description

A cross-site scripting (XSS) vulnerability in MediaWiki before 1.19.5 and 1.20.x before 1.20.4 and allows remote attackers to inject arbitrary web script or HTML via Lua function names.

Weakness: CWE-79

Which versions are affected by CVE-2013-1951?

It affects 2 products.

Products include Debian Debian Linux, Mediawiki Mediawiki.

How do I fix CVE-2013-1951?

Upgrade to a fixed version.

Escape output for the context it lands in and set a strict Content Security Policy. Upgrading the affected component is the real fix. More about Cross-site scripting.

Is CVE-2013-1951 being exploited?

There is no known exploitation of CVE-2013-1951 in the wild and no public exploit code.

Other vulnerabilities in Debian Debian Linux

• CVE-2015-3306 ProFTPD Improper Access Control Exploited Critical 10.0
• CVE-2025-49113 RoundCube Webmail Deserialization of Untrusted Data Exploited Critical 9.9
• CVE-2026-24061 GNU InetUtils Argument Injection Exploited Critical 9.8
• CVE-2025-39682 Linux Kernel Improper Check for Unusual or Exceptional Conditions Exploited Critical 9.8
• CVE-2024-9680 Mozilla Firefox Use-After-Free Exploited Critical 9.8

All Debian Debian Linux vulnerabilities

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as DEBIAN-CVE-2013-1951, GHSA-6f76-xp7g-326v.