CVE-2026-74793: Emilstenstrom Justhtml

Medium severity, CVSS 6.1. EPSS: 0.3% chance of exploitation in the next 30 days.

justhtml before 3.11.0 contains a cross-site scripting vulnerability where the default sanitizer bypasses event handler removal in selectedcontent projections. Attackers can inject SVG or MathML elements with event handlers that are cloned and reinserted into output without sanitization, enabling stored or reflected XSS attacks.

Affected products

• Emilstenstrom Justhtml: before 3.11.0 (fixed in 3.11.0)

Published 2026-08-23. Last modified 2026-08-26.