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TI-2026-18940 Aliases CVE-2026-23516

CVAT vulnerable to XSS via skeleton SVG images

Priority LOW 38CWE-83Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
Passive
Attack complexity
Low
Attack requirements
None
Impact type
Cross-site scripting
Confidentiality · integrity · availability
High · High · None
Fix status
Fixed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-79.

Summary

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.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.0017 6th percentileScored 2026-11-07
Fix Fixed cvat (cvat-ai): 2.55.0

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
cvat-aicvat2.2.0 to before 2.55.02.55.0Patch availableCNA
  • cvat Vendorcvat-ai Affected 2.2.0 to before 2.55.0 Fixed in 2.55.0 Patch available CNA

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:cvat:computer_vision_annotation_tool:*:*:*:*:*:*:*:*2.2.0 to before 2.55.0Vulnerablecvat-ai
  • cpe:2.3:a:cvat:computer_vision_annotation_tool:*:*:*:*:*:*:*:* Versions 2.2.0 to before 2.55.0 Vulnerable ·cvat-ai

Remediation

  • Fix · CNA cvat (cvat-ai) Fixed in 2.55.0

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-23516

References

Patch 2

  • TI-2021-20393 Apache Log4j2 Thread Context Message Pattern and Context Lookup Pattern vulnerable to a denial of service attack KEVCVSS 3.1CRITICAL 9.0
  • TI-2022-13228 Server-Side Request Forgery Vulnerability in Computer Vision Annotation Tool (CVAT) CVSS 3.1CRITICAL 9.8
  • TI-2025-16854 CVAT allows remote code execution via tracker Nuclio functions CVSS 4.0HIGH 8.7
  • TI-2026-18950 CVAT vulnerable to privilege escalation of users with staff status CVSS 4.0HIGH 8.5
  • TI-2024-24691 CVAT SSRF via custom cloud storage endpoints CVSS 3.1HIGH 8.5
  • TI-2024-24818 CVAT's export and backup-related API endpoints are susceptible to CSRF CVSS 3.1HIGH 7.1
See all 15 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences