CVE-2026-103437: The Wikimedia Foundation Mediawiki Readinglists Extension

Low severity, CVSS 1.1. EPSS: 0.3% chance of exploitation in the next 30 days.

Improper neutralization of Script-Related HTML tags in a web page (basic XSS) vulnerability in The Wikimedia Foundation MediaWiki ReadingLists extension allows Reflected XSS. This issue affects MediaWiki ReadingLists extension: 1.46 and 1.45.

Affected products

• The Wikimedia Foundation Mediawiki Readinglists Extension: version 1.46 only; version 1.45 only

Published 2026-09-30. Last modified 2026-09-30.