CVE-2026-44311: Fabric.js is a Javascript HTML5 canvas library

Routine

MEDIUM 5.4UPGRADE

CVE-2026-44311 is a medium-severity flaw (CVSS 5.4) affecting fabric.js. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

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

Why this priority

Public exploit reference

A fixed release or distro patch exists.

Risk facts

CVSS score	5.4 (Medium)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	Required
EPSS exploit chance	0.3% (top 81%)
CISA exploited list	No
Weakness	CWE-79, CWE-116
Published	2026-06-22
Last modified	2026-10-25

Publisher (CNA): GitHub, Inc. · Vendor: fabricjs

Last updated 2026-10-25 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2026-06-22 22:16 UTCPublished CVE record published
2026-10-25 23:10 UTCUpdated Record last modified

fabricjs fabric.js UPGRADE

Affected: < 7.4.0

Fixed in: 7.4.0

Safe to downgrade to: no unaffected older release

1. Check installed version

npm ls fabric.js

2. UPGRADE to 7.4.0

npm install fabric.js@">=7.4.0"

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2026-44311?

fabric.js: upgrade to 7.4.0. Exact commands for each OS are on this page.

Is CVE-2026-44311 being exploited?

CVE-2026-44311 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2026-44311 affect?

CVE-2026-44311 affects fabric.js. Severity is medium (CVSS 5.4). 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. Spec

How urgent is CVE-2026-44311?

Priority 29/100. Public exploit reference

References

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