Server-Side Request Forgery (SSRF) in draw.io - CVE-2026-63334
Published: July 1, 2026 / Updated: September 22, 2026
Vulnerability identifier: #VU136004
CSH Severity: Medium
CVSS v4: 8.2 [CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-63334
CWE-ID: CWE-918
Exploitation vector: Remote access
Exploit availability:
Public exploit is available
Vulnerability details
The disclosed vulnerability allows a remote attacker to perform SSRF attacks.
The vulnerability exists due to the DNS rebinding issue in draw.io's proxy feature. A remote attacker can send a specially crafted HTTP request and trick the application to initiate requests to arbitrary systems.
Successful exploitation of this vulnerability may allow a remote attacker gain access to sensitive data, located in the local network or send malicious requests to other servers from the vulnerable system.
Affected software
draw.io
How to mitigate CVE-2026-63334
Install updates from vendor's website.
draw.io - update to 30.2.7