CVE-2026-103045

Received Received - Intake

Stored XSS in MediaWiki Refreshed Skin

Publication date: 2026-09-29

Last updated on: 2026-09-29

Assigner: wikimedia-foundation

Description

Improper neutralization of input during web page generation ('cross-site scripting') vulnerability in The Wikimedia Foundation Mediawiki - Refreshed skin allows Stored XSS. This issue affects Mediawiki - Refreshed skin: before 1.46.1, 1.45.5, 1.43.10.

CVSS Scores

EPSS Scores

Probability:
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Meta Information

Published

2026-09-29

Last Modified

2026-09-29

Generated

2026-09-30

AI Q&A

2026-09-30

EPSS Evaluated

N/A

NVD

CVE-2026-103045

EUVD

EUVD-2026-89485

Affected Vendors & Products

Vendor	Product	Version / Range
the_wikimedia_foundation	mediawiki_refreshed_skin	to 1.46.1 (exc)

Helpful Resources

Exploitability

CWE

KEV

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

Executive Summary

This is a stored cross-site scripting (XSS) vulnerability in the Wikimedia Foundation MediaWiki - Refreshed skin. It allows attackers to inject malicious scripts into web pages that are then stored and served to other users. The issue exists in versions before 1.46.1, 1.45.5, and 1.43.10.

Impact Analysis

This vulnerability could allow attackers to steal user sessions, deface web pages, or perform actions on behalf of users. If you use the affected MediaWiki - Refreshed skin versions, your site may be compromised, leading to data breaches or unauthorized access.

Compliance Impact

This vulnerability could lead to non-compliance with GDPR or HIPAA if it results in unauthorized access to personal or sensitive data. GDPR requires protection against data breaches, and HIPAA mandates safeguards for protected health information. A successful XSS attack may violate these requirements.

Mitigation Strategies

Update the Mediawiki - Refreshed skin to version 1.46.1, 1.45.5, or 1.43.10 or later to address the stored XSS vulnerability.

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