CVE-2026-19504: Fabric.js loadFromJSON Server-Side Request Forgery Vulnerability

Severity: medium (CVSS 4.0 v3.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.1% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2026-09-15 · updated 2026-09-18
Weakness: CWE-918

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.

Affected products

Fabric.js: 7.2.0

References

https://www.zerodayinitiative.com/advisories/ZDI-26-588/

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