draw.io: XSS via crafted cell label when opening a .drawio file
CVE-2026-46642

6.1MEDIUM

Key Information:

Vendor

Jgraph

Status
Drawio
Vendor
CVE Published:
10 June 2026

What is CVE-2026-46642?

draw.io is a configurable diagramming and whiteboarding application. Prior to version 29.7.12, a crafted .drawio file can execute arbitrary JavaScript in the editor's origin when the file is opened. The vulnerability is not in the label sanitizer (which works correctly on the rendering path) but in a feature-detection routine in the Text Format panel that reads the raw cell label and assigns it to a detached element's innerHTML without sanitization. Browsers fire onerror for failed image loads even on detached elements, so an payload in any cell label triggers script execution as soon as the cell is selected — which import does automatically. This issue has been patched in version 29.7.12.

Affected Version(s)

drawio < 29.7.12

References

https://github.com/jgraph/drawio/security/advisories/GHSA...
x_refsource_CONFIRM
https://github.com/jgraph/drawio/releases/tag/v29.7.12
x_refsource_MISC

CVSS V3.1

Score:
6.1
Severity:
MEDIUM
Confidentiality:
Low
Integrity:
Low
Availability:
Low
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
Required
Scope:
Changed

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.