CVE-2026-73220: CVAT: Stored XSS via annotation guides in audio tasks
CVAT is an open source interactive video and image annotation tool for computer vision. From 2.68.0 until 2.70.0, the audio-task annotation guide renderer in cvat-ui/src/audio/components/annotation-page/audio-workspace/top-bar/audio-right-group.tsx passes attacker-controlled guide Markdown to MDEditor without the rehype-sanitize plugin. A user who can create or edit an annotation guide can store malicious JavaScript that executes when another user opens the guide. The script can issue arbitrary CVAT requests with the victim user's privileges. This issue is fixed in version 2.70.0.
Affected Software
Remediation
Recommended actions to resolve this vulnerability, in priority order.
- Upgrade
Upgrade
CVATto a version that resolves this vulnerability.Fixed in 2.70.0
Event History
Frequently Asked Questions
Who can exploit this issue, and who is affected by it?
An attacker must be able to create or edit an annotation guide in CVAT. Any user who opens the malicious guide can have JavaScript run in their browser with that user's CVAT privileges.
What can the malicious script do after a victim opens a guide?
The script can issue arbitrary CVAT requests using the victim user's privileges. The resulting impact depends on the permissions assigned to the user who views the guide.
Which versions require remediation?
CVAT versions from 2.68.0 through versions before 2.70.0 are affected. Version 2.70.0 contains the fix.