XSS in The Wikimedia Foundation MediaWiki - Massmessage Extension

CVE-2026-103050

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

Vulnerability class: XSS (Cross-Site Scripting)

Published .

EPSS exploit prediction

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Affected products

Weakness classification (CWE)

References