CVE-2026-73220 CVAT: Stored XSS via annotation guides in audio tasks
Attackers can inject malicious scripts into audio annotation guides, executing code in victims' browsers to hijack sessions or perform actions.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2026-73220?
CVE-2026-73220 is a high-severity cross-site scripting vulnerability in cvat-ai cvat, published on 20 Aug 2026. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link.
Official description
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.
Weakness: CWE-80
Which versions are affected by CVE-2026-73220?
How do I fix CVE-2026-73220?
No fix has been published for CVE-2026-73220 yet. Limit exposure of the affected software until one is available.
Escape output for the context it lands in and set a strict Content Security Policy. Upgrading the affected component is the real fix. More about Cross-site scripting.
Is CVE-2026-73220 being exploited?
There is no known exploitation of CVE-2026-73220 in the wild and no public exploit code.
Sources
Also known as GHSA-chxx-45vm-qhc9.