Synchronous Access of Remote Resource without Timeout in draw.io - #VU147248
Published: September 7, 2026
Vulnerability identifier: #VU147248
CSH Severity: Medium
CVSS v4: 6.9 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N]
CVE-ID: N/A
CWE-ID: CWE-1088
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to cause a denial of service.
The vulnerability exists due to synchronous access to a remote resource without a timeout in ExportProxyServlet when handling concurrent requests to the /service/* endpoint while the configured EXPORT_URL backend is unresponsive. A remote attacker can send concurrent requests to exhaust the servlet thread pool to cause a denial of service.
Affected software
draw.io
Remediation
Install security update from vendor's website.
draw.io - update to 31.4.1