CVE-2026-58031
Received Received - Intake

Cross-Site Scripting in MediaWiki

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. This vulnerability is associated with program files resources/src/mediawiki.Special.Apisandbox/ApiSandboxLayout.Js. This issue affects MediaWiki: from 1.46.0-rc.0 before 1.46.0.

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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-2026-58031
EUVD
EUVD-2026-41012

Affected Vendors & Products

Showing 2 associated CPEs
Vendor Product Version / Range
wikimedia mediawiki From 1.46.0-rc.0 (inc) to 1.46.0 (exc)
wikimedia_foundation mediawiki From 1.46.0-rc.0 (inc) 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.

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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 software, specifically in the program file resources/src/mediawiki.Special.Apisandbox/ApiSandboxLayout.Js. The issue occurs in versions from 1.46.0-rc.0 before 1.46.0.

Impact Analysis

Cross-site Scripting (XSS) vulnerabilities can allow attackers to inject malicious scripts into web pages viewed by other users. This can lead to unauthorized actions on behalf of users, theft of sensitive information such as cookies or session tokens, and potentially compromise user accounts or site integrity.

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