CVE-2026-58028
Received Received - Intake

Cross-Site Scripting in MediaWiki and CentralAuth

Publication date: 2026-07-01

Last updated on: 2026-07-01

Assigner: wikimedia-foundation

Description
Improper Neutralization of Input During Web Page Generation (XSS or 'Cross-site Scripting') vulnerability in Wikimedia Foundation MediaWiki, Wikimedia Foundation CentralAuth. This vulnerability is associated with program files includes/Api/ApiFormatBase.Php, includes/Api/ApiHelp.Php, includes/ResourceLoader/Module.Php, includes/Hooks/Handlers/PageDisplayHookHandler.Php, includes/LogFormatter/PermissionChangeLogFormatter.Php. This issue affects MediaWiki: from * before 1.46.0, 1.45.4, 1.44.6, 1.43.9; CentralAuth: from * before 1.46.0, 1.45.4, 1.44.6, 1.43.9.

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Meta Information

Published
2026-07-01
Last Modified
2026-07-01
Generated
2026-07-01
AI Q&A
2026-07-01
EPSS Evaluated
N/A
NVD
CVE-2026-58028
EUVD
EUVD-2026-41029

Affected Vendors & Products

Showing 2 associated CPEs
Vendor Product Version / Range
wikimedia mediawiki to 1.46.0 (exc)
wikimedia centralauth to 1.46.0 (exc)

Helpful Resources

Exploitability

CWE
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KEV
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CWE ID Description
CWE-79 The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users.

Attack-Flow Graph

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Impact Analysis

The vulnerability can allow attackers to execute malicious scripts in the context of the affected web application. This can lead to unauthorized actions such as stealing user credentials, hijacking user sessions, or performing actions on behalf of the user without their consent.

Executive Summary

This vulnerability is an Improper Neutralization of Input During Web Page Generation, commonly known as Cross-site Scripting (XSS). It affects the Wikimedia Foundation's MediaWiki and CentralAuth components. The issue arises because certain program files do not properly neutralize input, which can allow attackers to inject malicious scripts into web pages.

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