4.8

CVE-2025-61636: mediawiki Cross-site Scripting

CVSS: 4.8v3.1MediumAnalyzed
AliasesUBUNTU-CVE-2025-61636DEBIAN-CVE-2025-61636
Published 02-02-2026Last modified 03-02-2026
Open JSON

Vulnerability summary

CVE-2025-61636 is a medium (CVSS 4.8) Cross-site Scripting vulnerability in mediawiki. EPSS estimates a 0.25% chance of exploitation in the next 30 days, higher than 14.9% of scored vulnerabilities.

Overall risk
19/100
0100
Low · default modelHow is this calculated?
CVSS score
4.8/10
010
Medium · v3.1 (NVD)
EPSS score
0.25%
0%100%
Low · +0.03 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Timeline

  1. 02-02-2026
    PublishedVulnerability first disclosed.
  2. 03-02-2026
    Last modifiedVulnerability information updated.

Description

Improper Neutralization of Input During Web Page Generation (XSS or 'Cross-site Scripting') vulnerability in Wikimedia Foundation MediaWiki. This vulnerability is associated with program files includes/htmlform/fields/HTMLButtonField.Php. This issue affects MediaWiki: from * before 1.39.14, 1.43.4, 1.44.1.

CVSS metrics

6 scores · 4 sources · 2 versions

EPSS trend

Probability

0.25%

Chance of exploitation in the next 30 days

Percentile

15%

Versus all other CVEs

30-day change

+0.03 pp

From 0.22% on 20-09-2026

20-09-202620-10-2026
EPSS score
0.25%

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

Debian1 product
  • mediawiki< 1:1.43.6+dfsg-1~deb13u1 | < 1:1.43.5+dfsg-1
Mediawiki1 product
  • mediawiki< 1.39.14 | ≥ 1.39.15, < 1.43.4 | ≥ 1.43.5, < 1.44.1
Ubuntu1 product
  • mediawikiAll versions (No fix recorded)
Wikimedia foundation1 product

4 vendors · 4 products

References

5 links