CVE-2026-44311: Fabricjs Fabric.js

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

Fabric.js is a Javascript HTML5 canvas library. Prior to 7.4.0, a potential Cross-Site Scripting (XSS) vulnerability exists in Fabric.js due to improper escaping of user-controlled input during SVG serialization via the toSVG() method. Specifically, the color field within the colorStops array of a fabric.Gradient object is not properly escaped when converted into SVG <stop> elements. If an application renders the generated SVG string into the DOM, this may allow an attacker to inject arbitrary HTML/SVG and execute JavaScript in the victim's browser. This vulnerability is fixed in 7.4.0.

Affected products

• Fabricjs Fabric.js: before 7.4.0 (fixed in 7.4.0)

Published 2026-06-22. Last modified 2026-06-26.