CVE-2026-19504 Fabric.js loadFromJSON Server-Side Request Forgery Vulnerability
Remote attackers can exploit improper URI validation in Fabric.js loadFromJSON to access internal network resources and disclose sensitive information.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-19504?
CVE-2026-19504 is a medium-severity server-side request forgery vulnerability in Fabric.js, published on 15 Sep 2026. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
Fabric.js loadFromJSON Server-Side Request Forgery Vulnerability. This vulnerability allows remote attackers to disclose sensitive information on affected installations of Fabric.js. Interaction with this library is required to exploit this vulnerability but attack vectors may vary depending on the implementation.
The specific flaw exists within the implementation of the loadFromJSON method. The issue results from the lack of proper validation of a URI prior to accessing resources. An attacker may be able to leverage this vulnerability to gain improper access to network resources. Was ZDI-CAN-29318.
Weakness: CWE-918
Which versions are affected by CVE-2026-19504?
How do I fix CVE-2026-19504?
No fix has been published for CVE-2026-19504 yet. Limit exposure of the affected software until one is available.
Upgrade, and send outbound requests through an allow-list that blocks internal addresses. More about Server-side request forgery.
Is CVE-2026-19504 being exploited?
There is no known exploitation of CVE-2026-19504 in the wild and no public exploit code.
Sources
Also known as GHSA-vc96-76vg-f8vj.