What is CVE-2025-6926?

CVE-2025-6926 is a high-severity vulnerability in Wikimedia Foundation MediaWiki - Centralauth Extension, classified under Improper Authentication. CVSS score: 8.8/10. Published 2025-07-03.

How severe is CVE-2025-6926?

High severity. CVSS v3 base score is 8.8 out of 10.

Is CVE-2025-6926 known to be exploited?

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

Auth bypass in Wikimedia Foundation MediaWiki - Centralauth Extension

CVE-2025-6926

Improper Authentication vulnerability in Wikimedia Foundation Mediawiki - CentralAuth Extension allows : Bypass Authentication.This issue affects Mediawiki - CentralAuth Extension: from 1.39.X before 1.39.13, from 1.42.X before 1.42.7, from 1.43.X before 1.43.2.

Vulnerability class: Broken Authentication

EPSS: 0.004 (32.3th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H.

Affected products

Wikimedia Foundation Mediawiki - Centralauth Extension — versions 1.39.x, 1.42.x, 1.43.x

Weakness classification (CWE)

CWE-287 — Improper Authentication

Public proof-of-concept exploits

w4zu/Debian_

References

Frequently asked questions

What is CVE-2025-6926?: CVE-2025-6926 is a high-severity vulnerability in Wikimedia Foundation MediaWiki - Centralauth Extension, classified under Improper Authentication. CVSS score: 8.8/10. Published 2025-07-03.
How severe is CVE-2025-6926?: High severity. CVSS v3 base score is 8.8 out of 10.
Is CVE-2025-6926 known to be exploited?: 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.