Resource exhaustion in draw.io - #VU144554
Published: August 21, 2026
Vulnerability identifier: #VU144554
CSH Severity: Low
CVSS v4: 4.6 [CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N]
CVE-ID: N/A
CWE-ID: CWE-400
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 uncontrolled resource consumption in mxGraph.prototype.updatePageBreaks when rendering a diagram with extreme cell coordinates. A remote attacker can supply a specially crafted diagram file or update response to cause a denial of service.
User interaction is required to open a crafted file or follow a link that loads attacker-controlled diagram content.
Affected software
draw.io
Remediation
Install security update from vendor's website.
draw.io - update to 30.3.8