What is CVE-2025-6591?

CVE-2025-6591 is a vulnerability in Wikimedia Foundation MediaWiki, classified under Cross-site Scripting. Published 2026-02-02.

Is CVE-2025-6591 known to be exploited?

1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

XSS in Wikimedia Foundation MediaWiki

CVE-2025-6591

Vulnerability in Wikimedia Foundation MediaWiki. This vulnerability is associated with program files includes/api/ApiFeedContributions.Php. This issue affects MediaWiki: from * before 1.39.13, 1.42.7 1.43.2, 1.44.0.

Vulnerability class: XSS (Cross-Site Scripting)

EPSS: 0.004 (31.9th percentile) — read the EPSS interpretation.

Affected products

Wikimedia Foundation Mediawiki

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

Public proof-of-concept exploits

w4zu/Debian_

References

c4f26cc8-17ff-4c99-b5e2-38fc1793eacc

Frequently asked questions

What is CVE-2025-6591?: CVE-2025-6591 is a vulnerability in Wikimedia Foundation MediaWiki, classified under Cross-site Scripting. Published 2026-02-02.
Is CVE-2025-6591 known to be exploited?: 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.