CVE-2026-103049
Received Received - Intake

Reflected Cross-Site Scripting in MediaWiki Cargo Extension

Publication date: 2026-09-30

Last updated on: 2026-09-30

Assigner: wikimedia-foundation

Description
Improper neutralization of input during web page generation ('cross-site scripting') vulnerability in The Wikimedia Foundation Mediawiki - Cargo extension allows Reflected XSS. This issue affects Mediawiki - Cargo extension: before 1.46.1.

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Meta Information

Published
2026-09-30
Last Modified
2026-09-30
Generated
2026-09-30
AI Q&A
2026-09-30
EPSS Evaluated
N/A
NVD
CVE-2026-103049
EUVD
EUVD-2026-89502

Affected Vendors & Products

Showing 1 associated CPE
Vendor Product Version / Range
the_wikimedia_foundation mediawiki_cargo_extension to 1.46.1 (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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Executive Summary

This is a reflected cross-site scripting (XSS) vulnerability in the Wikimedia Foundation MediaWiki Cargo extension. It occurs when user input is not properly neutralized during web page generation, allowing malicious scripts to be executed in a victim's browser.

Impact Analysis

An attacker could exploit this to steal sensitive data like session cookies, perform actions on behalf of the user, or redirect users to malicious websites. Users of affected MediaWiki sites with the Cargo extension could be targeted.

Compliance Impact

This XSS vulnerability could lead to unauthorized data access or modification, violating GDPR's data protection principles or HIPAA's security requirements for protected health information. Organizations may face compliance penalties if exploited.

Mitigation Strategies

Update the Mediawiki Cargo extension to version 1.46.1 or later to address the reflected XSS vulnerability.

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