8.6

CVE-2025-53370: Citizen stored XSS vulnerability through short descriptions

Analyzed
Published 03-07-2025Last modified 07-07-2025

Vulnerability summary

CVE-2025-53370 is a high (CVSS 8.6) Cross-site Scripting vulnerability in starcitizen.tools citizen. EPSS estimates a 0.38% chance of exploitation in the next 30 days, higher than 30.4% of scored vulnerabilities. 1 public exploit is recorded.

Overall risk
44/100
0100
Medium · default modelHow is this calculated?
CVSS score
8.6/10
010
High · v3.1 (CVE.org)
EPSS score
0.38%
0%100%
Low · +0.05 pp in 30 days
KEVNot listedNot listed by any tracked catalog.
RansomwareNot flaggedNo ransomware use recorded.
Public exploits1github

Timeline

  1. 03-07-2025
    PublishedVulnerability first disclosed.
  2. 07-07-2025
    Last modifiedVulnerability information updated.

Description

Citizen is a MediaWiki skin that makes extensions part of the cohesive experience. From versions 1.9.4 to before 3.4.0, short descriptions set via the ShortDescription extension are inserted as raw HTML by the Citizen skin, allowing any user to insert arbitrary HTML into the DOM by editing a page. This issue has been patched in version 3.4.0.

CVSS metrics

2 scores · 2 sources · 1 version

EPSS trend

Probability

0.38%

Chance of exploitation in the next 30 days

Percentile

30%

Versus all other CVEs

30-day change

Increase +0.05 pp

From 0.33% on 22-09-2026

22-09-202622-10-2026

Known exploited

Compare KEV catalogs
CISA KEV

Not in the CISA KEV catalog.

ENISA CNW

Not in the ENISA CNW catalog.

CIRCL

Not in the CIRCL catalog.

Public exploits

1 found
  • githubUnverified

    Mediawiki Skins Citizen

    Maturity: poc

Weaknesses

CWE · root cause

Affected systems

Starcitizen.tools1 product
Starcitizentools1 product
  • mediawiki-skins-citizen≥ 65a7ffd927467c8c3557146d1ac6de62b0369b6c, < c85a40bddc8651fff66df83a72debddcb34f0521 | ≥ 1.9.4, < 3.4.0

2 vendors · 2 products

References

3 links