CVE-2026-44311
Fabric.js: Improper escaping in fabric.Gradient colorStops leads to XSS in SVG serialization
Description
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.
INFO
Published Date :
June 22, 2026, 8:50 p.m.
Last Modified :
June 22, 2026, 8:50 p.m.
Remotely Exploit :
Yes !
Source :
GitHub_M
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS 3.1 | MEDIUM | MITRE-CVE | ||||
| CVSS 3.1 | MEDIUM | [email protected] |
Solution
- Update Fabric.js to version 7.4.0 or later.
- Sanitize user-supplied input before SVG serialization.
- Ensure SVG output is properly escaped before rendering.
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