8.6

CVE-2025-53369: starcitizentools mediawiki-extensions-shortdescription Cross-site Scripting

CVSS: 8.6v3.1HighDeferred
Published 03-07-2025Last modified 03-07-2025
Open JSON

Vulnerability summary

CVE-2025-53369 is a high (CVSS 8.6) Cross-site Scripting vulnerability in starcitizentools mediawiki-extensions-shortdescription. EPSS estimates a 0.34% chance of exploitation in the next 30 days, higher than 26.1% of scored vulnerabilities.

Overall risk
34/100
0100
Medium · default modelHow is this calculated?
CVSS score
8.6/10
010
High · v3.1 (CVE.org)
EPSS score
0.34%
0%100%
Low · +0.04 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Timeline

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

Description

Short Description is a MediaWiki extension that provides local short description support. In version 4.0.0, short descriptions are not properly sanitized before being inserted as HTML using mw.util.addSubtitle, allowing any user to insert arbitrary HTML into the DOM by editing a page. This issue has been patched in version 4.0.1.

CVSS metrics

2 scores · 2 sources · 1 version

EPSS trend

Probability

0.34%

Chance of exploitation in the next 30 days

Percentile

26%

Versus all other CVEs

30-day change

+0.04 pp

From 0.30% on 20-09-2026

20-09-202620-10-2026
EPSS score
0.34%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Starcitizentools1 product

1 vendor · 1 product

References

2 links