CVE-2025-49578 json
Citizen allows stored XSS in user registration date message
published 2025-06-12 16 mo ago modified 2026-06-17 4 mo ago also GHSA-2v3v-3whp-953h , EUVD-2025-18205
- cvss
- 6.5
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.4%
- EPSS 0.4% chance of exploitation in 30 days, percentile 38%
- public exploits
- 0
- none known
Summary
Citizen is a MediaWiki skin that makes extensions part of the cohesive experience. Various date messages returned by `Language::userDate` are inserted into raw HTML, allowing anybody who can edit those messages to insert arbitrary HTML into the DOM. This impacts wikis where a group has the `editinterface` but not the `editsitejs` user right. This vulnerability is fixed in 3.3.1.
Patch / fix
- packagist starcitizentools/citizen-skin 3.3.1
- starcitizen.tools citizen 3.3.1
CISA SSVC
- Exploitation
- Proof of concept is public
- Automatable
- no
- Technical impact
- partial
- Assessed
- 16 mo ago
Exploit prediction
0.44% chance of exploitation in the next 30 days, higher than 38% of all scored CVEs (FIRST EPSS, 2026-11-08).
Exploits and checks
- github.com https://github.com/StarCitizenTools/mediawiki-skins-Citizen/security/advisories/GHSA-2v3v-3whp-953h referenced PoC, tagged "exploit" by a source, unverified
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 6.5 | CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:N |
| NVD | 3.1 | 5.4 | CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N |
| GitHub | 3.1 | 6.5 | CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:N |
Affected packages
| ecosystem | package | affected | fixed in |
|---|---|---|---|
| packagist | starcitizentools/citizen-skin | >=3.3.0, <3.3.1 |
3.3.1 |
Affected products
- StarCitizenTools mediawiki-skins-Citizen
Classification
- Weakness
-
- CWE-79 Improper Neutralization of Input During Web Page Generation
References
-
github.com
/StarCitizenTools/mediawiki-skins-Citizen/commit/64cb5d7ab3a6dc0381fae54b31e8fc4afadc8beb
web, patch
-
github.com
/StarCitizenTools/mediawiki-skins-Citizen/commit/93c36ac778397e0e7c46cf7adb1e5d848265f1bd
web, patch
-
github.com
/StarCitizenTools/mediawiki-skins-Citizen/security/advisories/GHSA-2v3v-3whp-953h
web, exploit, vendor-advisory
-
nvd.nist.gov
/vuln/detail/CVE-2025-49578
advisory
-
github.com
/StarCitizenTools/mediawiki-skins-Citizen
package
Sources
- CVE List CVE-2025-49578
- GitHub Advisory GHSA-2v3v-3whp-953h
- NVD CVE-2025-49578
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