The vulnerability exists in Fabric.js's loadFromJSON method where it fails to properly validate URIs before accessing resources. This flaw can be exploited by remote attackers to perform SSRF attacks, potentially disclosing sensitive information by accessing internal or protected network resources. The vulnerability was tracked as ZDI-CAN-29318 and is assigned CVE-2026-19504. The CVSS 3.0 vector indicates local attack vector with high attack complexity, no privileges required, no user interaction, and limited confidentiality and integrity impact without availability impact.

Successful exploitation may allow an attacker to cause the affected application to make unauthorized network requests, potentially disclosing sensitive information from internal network resources. The impact is limited to confidentiality and integrity with no availability impact. The vulnerability requires local access (AV:L) and has high attack complexity (AC:H), reducing the likelihood of widespread exploitation.

No patch or official fix information is provided. Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Since this is not a cloud service, remediation depends on the vendor or maintainers releasing a fix. Until then, users should carefully validate and sanitize any input passed to loadFromJSON to prevent SSRF exploitation.