Authentication Bypass Vulnerability in Wikimedia Foundation Mediawiki CentralAuth Extension
CVE-2025-6926

8.8HIGH

Key Information:

Vendor

Wikimedia Foundation

Status
Mediawiki - Centralauth Extension
Vendor
CVE Published:
3 July 2025

What is CVE-2025-6926?

The Wikimedia Foundation's Mediawiki - CentralAuth Extension has been discovered to have an improper authentication vulnerability that allows attackers to bypass standard authentication mechanisms. This issue affects versions from 1.39.X before 1.39.13, 1.42.X before 1.42.7, and 1.43.X before 1.43.2. It signifies a potential risk to user accounts and overall application integrity, prompting the need for immediate attention and remediation.

Affected Version(s)

Mediawiki - CentralAuth Extension 1.39.x < 1.39.13

Mediawiki - CentralAuth Extension 1.42.x < 1.42.7

Mediawiki - CentralAuth Extension 1.43.x < 1.43.2

References

https://phabricator.wikimedia.org/T389010
https://gerrit.wikimedia.org/r/c/mediawiki/core/+/1165117

CVSS V3.1

Score:
8.8
Severity:
HIGH
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
Required
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

Tgr
.
CVE-2025-6926 : Authentication Bypass Vulnerability in Wikimedia Foundation Mediawiki CentralAuth Extension