SSRF in Fabric.js
CVE-2026-19504
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.
Vulnerability class: SSRF (Server-Side Request Forgery)
CVSS v3 metric
CVSS v3 base score 4.0 (Medium). Vector: CVSS:3.0/AV:L/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N.
Affected products
- Fabric.js — versions 7.2.0
Weakness classification (CWE)
References
- zdi-disclosures@trendmicro.com (x_research-advisory)
Frequently asked questions
- What is CVE-2026-19504?
- CVE-2026-19504 is a medium-severity vulnerability in Fabric.js, classified under Server-Side Request Forgery (SSRF). CVSS score: 4.0/10. Published 2026-09-15.
- How severe is CVE-2026-19504?
- Medium severity. CVSS v3 base score is 4.0 out of 10.