Vulnerability · Published Jul 3, 2025 · Assigned by wikimedia-foundation
CVE-2025-6926Security Authentication Bypass in CentralAuth
High 8.8
In plain English
A high-severity improper authentication in Mediawiki - CentralAuth Extension from Wikimedia Foundation. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.5% (higher than 39% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Official description
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.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian:12 | mediawiki | 1:1.39.13-1~deb12u1 | DSA-5957-1 |
| Debian:12 | mediawiki | 1:1.39.13-1~deb12u1 | DEBIAN-CVE-2025-6926 |
| Debian:13 | mediawiki | 1:1.43.3+dfsg-1 | DEBIAN-CVE-2025-6926 |
| Debian:14 | mediawiki | 1:1.43.3+dfsg-1 | DEBIAN-CVE-2025-6926 |
| Ubuntu:25.10 | mediawiki | no fix listed | UBUNTU-CVE-2025-6926 |
| Ubuntu:26.04:LTS | mediawiki | no fix listed | UBUNTU-CVE-2025-6926 |
| Ubuntu:26.10 | mediawiki | no fix listed | UBUNTU-CVE-2025-6926 |
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Wikimedia Foundation | Mediawiki - CentralAuth Extension | 1.39.x – before 1.39.131.42.x – before 1.42.71.43.x – before 1.43.2 |
Weakness: CWE-287 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H