CVE-2026-22710: Wikimedia Wikibase

Medium severity, CVSS 5.4. EPSS: 0.2% chance of exploitation in the next 30 days.

Improper Neutralization of Input During Web Page Generation (XSS or 'Cross-site Scripting') vulnerability in The Wikimedia Foundation Mediawiki - Wikibase Extension allows Cross-Site Scripting (XSS).This issue affects Mediawiki - Wikibase Extension: 1.45, 1.44, 1.43, 1.39.

Affected products

• Wikimedia Wikibase: version 1.39 only; version 1.43 only; version 1.44 only; version 1.45 only

Published 2026-01-09. Last modified 2026-06-17.