CVE-2019-19910: Mediawiki

Medium severity, CVSS 6.1. EPSS: 0.7% chance of exploitation in the next 30 days.

The MinervaNeue Skin in MediaWiki from 2019-11-05 to 2019-12-13 (1.35 and/or 1.34) mishandles certain HTML attributes, as demonstrated by IMG onmouseover= (impact is XSS) and IMG src=http (impact is disclosing the client's IP address). This can occur within a talk page topical header that is viewed within a mobile (MobileFrontend) context.

Affected products

• Mediawiki Mediawiki: version 1.34 only; version 1.35 only

Published 2019-12-19. Last modified 2026-06-17.