XSS in Cvat Computer Vision Annotation Tool
CVE-2026-23516
CVAT is an open source interactive video and image annotation tool for computer vision. In versions 2.2.0 through 2.54.0, an attacker is able to execute arbitrary JavaScript in a victim user's CVAT UI session, provided that they are able to create a maliciously crafted label in a CVAT task or project, then get the victim user to either edit that label, or view a shape that refers to that label; and/or get the victim user to upload a maliciously crafted SVG image when configuring a skeleton. This gives the attacker temporary access to all CVAT resources that the victim user can access. Version 2.55.0 fixes the issue.
EPSS: 0.001 (4.1th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 5.4 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N.
Affected products
- Cvat Computer_vision_annotation_tool
- Cvat-ai Cvat — versions >= 2.2.0, < 2.55.0
Weakness classification (CWE)
References
- security-advisories@github.com (x_refsource_CONFIRM, Patch, Third Party Advisory)
- security-advisories@github.com (Patch, x_refsource_MISC)
Frequently asked questions
- What is CVE-2026-23516?
- CVE-2026-23516 is a medium-severity vulnerability in Cvat Computer Vision Annotation Tool, classified under Improper Neutralization of Script in Attributes in a Web Page. CVSS score: 5.4/10. Published 2026-01-21.
- How severe is CVE-2026-23516?
- Medium severity. CVSS v3 base score is 5.4 out of 10.