CentralAuth Extension up to 1.39.12/1.42.6/1.43.1 on Mediawiki improper authentication

Summaryinfo

A vulnerability, which was classified as critical, has been found in CentralAuth Extension up to 1.39.12/1.42.6/1.43.1 on Mediawiki. The impacted element is an unknown function. Performing a manipulation results in improper authentication. This vulnerability is known as CVE-2025-6926. Remote exploitation of the attack is possible. No exploit is available. It is advisable to upgrade the affected component.

Detailsinfo

A vulnerability, which was classified as critical, was found in CentralAuth Extension up to 1.39.12/1.42.6/1.43.1 on Mediawiki. This affects an unknown functionality. The manipulation with an unknown input leads to a improper authentication vulnerability. CWE is classifying the issue as CWE-287. When an actor claims to have a given identity, the product does not prove or insufficiently proves that the claim is correct. This is going to have an impact on confidentiality, integrity, and availability. The summary by CVE is:

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.

The weakness was published by Tgr. The advisory is shared at phabricator.wikimedia.org. This vulnerability is uniquely identified as CVE-2025-6926 since 06/30/2025. The exploitability is told to be easy. It is possible to initiate the attack remotely. No form of authentication is needed for exploitation. Neither technical details nor an exploit are publicly available.

The vulnerability scanner Nessus provides a plugin with the ID 241337 (Debian dsa-5957 : mediawiki - security update), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 1.39.13, 1.42.7 or 1.43.2 eliminates this vulnerability.

The vulnerability is also documented in the databases at Tenable (241337) and EUVD (EUVD-2025-19884). If you want to get the best quality for vulnerability data then you always have to consider VulDB.

Productinfo

Name

• CentralAuth Extension

Version

• 1.39.0
• 1.39.1
• 1.39.2
• 1.39.3
• 1.39.4
• 1.39.5
• 1.39.6
• 1.39.7
• 1.39.8
• 1.39.9
• 1.39.10
• 1.39.11
• 1.39.12
• 1.42.0
• 1.42.1
• 1.42.2
• 1.42.3
• 1.42.4
• 1.42.5
• 1.42.6
• 1.43.0
• 1.43.1

CPE 2.3info

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CPE 2.2info

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If you want to get the best quality for vulnerability data then you always have to consider VulDB.

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