What is CVE-2025-61639?

CVE-2025-61639 is a medium-severity vulnerability in Mediawiki, classified under Information Disclosure. CVSS score: 4.8/10. Published 2026-02-03.

How severe is CVE-2025-61639?

Medium severity. CVSS v3 base score is 4.8 out of 10.

Information disclosure in Mediawiki

CVE-2025-61639

Exposure of Sensitive Information to an Unauthorized Actor vulnerability in Wikimedia Foundation MediaWiki. This vulnerability is associated with program files includes/logging/ManualLogEntry.Php, includes/recentchanges/RecentChangeFactory.Php, includes/recentchanges/RecentChangeStore.Php. This issue affects MediaWiki: from * before 1.39.14, 1.43.4, 1.44.1.

Vulnerability class: Information Disclosure

EPSS: 0.002 (12.7th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 4.8 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N.

Affected products

Weakness classification (CWE)

CWE-200 — Information Disclosure

References

c4f26cc8-17ff-4c99-b5e2-38fc1793eacc (Permissions Required)

Frequently asked questions

What is CVE-2025-61639?: CVE-2025-61639 is a medium-severity vulnerability in Mediawiki, classified under Information Disclosure. CVSS score: 4.8/10. Published 2026-02-03.
How severe is CVE-2025-61639?: Medium severity. CVSS v3 base score is 4.8 out of 10.