Quick answers
- Is CVE-2026-19504 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2026-19504 being exploited in the wild.
- How severe is CVE-2026-19504?
- Medium severity, with a CVSS score of 4, published 15 September 2026.
- Which products and versions are affected?
- Fabric.js Contributors Fabric.js.
- Is there a fix for CVE-2026-19504?
- No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.
- How is CVE-2026-19504 attacked?
- It is attacked over the network.
- Am I affected by CVE-2026-19504?
- Check whether anything you run is named in the advisory. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.
Technical details
This vulnerability is a Server-Side Request Forgery (SSRF) issue in the loadFromJSON method of Fabric.js, caused by insufficient validation of URIs before resource access. An attacker can exploit this by crafting malicious input containing a specially-formed URI that causes the application to request internal or unintended network resources. The attack requires interaction with the vulnerable library but does not necessarily require authentication or special privileges, depending on the implementation context. Exploitation allows an attacker to access local files or internal services, potentially leading to information disclosure. Patches or updates addressing this vulnerability are expected to be available from the Fabric.js maintainers.
Affected products
- Fabric.js Contributors Fabric.js
Timeline
- 2026-09-15: disclosed