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OpenAdvisories
Medium · 4.7 CVE-2025-25287 EUVD-2025-4101

Lakeus vulnerable to stored XSS via system messages

Published Feb 13, 2025 · Updated Jul 21, 2025 · Assigned by GitHub_M

Description

Lakeus is a simple skin made for MediaWiki. Starting in version 1.0.8 and prior to versions 1.3.1+REL1.39, 1.3.1+REL1.42, and 1.4.0, Lakeus is vulnerable to store cross-site scripting via malicious system messages, though editing the messages requires high privileges. Those with `(editinterface)` rights can edit system messages that are improperly handled in order to send raw HTML. In the case of `lakeus-footermessage`, this will affect all users if the server is configured to link back to this repository. Otherwise, the system messages in themeDesigner.js are only used when the user enables it in their preferences. Versions 1.3.1+REL1.39, 1.3.1+REL1.42, and 1.4.0 contain a patch.

Affected products

VendorProductAffectedFixed
lakejason0 mediawiki-skins-Lakeus >= 1.0.8, < 1.3.1+REL1.39 —

References