CVE-2026-44369: CVAT stored XSS in annotation guides

CVE-2026-44369 · Severity: info · CVSS 8.5 · Published 2026-05-13

CVAT is an open-source tool used by teams to label video and images for artificial intelligence training. A security flaw allows users with basic permissions to embed malicious scripts into annotation guides. If another user views these guides, the script can execute in their browser, allowing the attacker to perform actions or access data with the victim's authority.

Technologies: CVAT.ai CVAT. Vendors: CVAT.ai.

Quick answers

Is CVE-2026-44369 exploited in the wild?
No. Junglewise Threat Intelligence has no report of CVE-2026-44369 being exploited in the wild.
How severe is CVE-2026-44369?
Informational severity, with a CVSS score of 8.5, published 13 May 2026.
Which products and versions are affected?
CVAT.ai CVAT 2.5.0 to 2.63.0.
Is there a fix for CVE-2026-44369?
No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.
How is CVE-2026-44369 attacked?
It is attacked over the network, in a network appliance.
Am I affected by CVE-2026-44369?
Check whether you run CVAT.ai CVAT at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

Technical details

A stored Cross-Site Scripting (XSS) vulnerability exists in CVAT due to improper neutralization of input in the annotation guide component. The root cause is attributed to insecure defaults in the '@uiw/react-md-editor' library, which fails to sanitize Markdown content by default. An attacker with low privileges (the ability to create or edit tasks) can inject malicious JavaScript into the annotation guide. When a victim views the guide, the script executes in their browser context, enabling the attacker to perform unauthorized actions or exfiltrate data using the victim's session. The issue is resolved in version 2.64.0 by implementing proper sanitization for the Markdown editor.

Affected products

  • CVAT.ai CVAT 2.5.0 to 2.63.0

Timeline

  • 2026-04-30: advisory: GitHub Security Advisory published
  • 2026-05-13: disclosed: NVD publication date

References

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