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 <img src=x onerror=...> 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.
History

Wed, 10 Jun 2026 19:45:00 +0000

Type Values Removed Values Added
First Time appeared Jgraph
Jgraph drawio
Vendors & Products Jgraph
Jgraph drawio

Wed, 10 Jun 2026 18:15:00 +0000

Type Values Removed Values Added
Description 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 <img src=x onerror=...> 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.
Title draw.io: XSS via crafted cell label when opening a .drawio file
Weaknesses CWE-79
References
Metrics cvssV3_1

{'score': 6.1, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N'}


cve-icon MITRE

Status: PUBLISHED

Assigner: GitHub_M

Published:

Updated: 2026-06-10T17:42:02.156Z

Reserved: 2026-05-15T20:11:54.584Z

Link: CVE-2026-46642

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Received

Published: 2026-06-10T18:17:06.007

Modified: 2026-06-10T18:17:06.007

Link: CVE-2026-46642

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-06-10T19:45:39Z