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TI-2025-31215 Aliases CVE-2025-49135

CVAT missing validation for in-progress backup upload names

Priority LOW 24CWE-639Published · Updated

Key facts

Attack vector
Network
Privileges required
Low
User interaction
None
Attack complexity
Low
Attack requirements
None
Impact type
Security bypass
Confidentiality · integrity · availability
Low · None · None
Fix status
Fixed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-639.

Summary

CVAT is an open source interactive video and image annotation tool for computer vision. Versions 2.2.0 through 2.39.0 have no validation during the import process of a project or task backup to check that the filename specified in the query parameter refers to a TUS-uploaded file belonging to the same user. As a result, if an attacker with a CVAT account and a `user` role knows the filenames of other users' uploads, they could potentially access and steal data by creating projects or tasks using those files. This issue does not affect annotation or dataset TUS uploads, since in this case object-specific temporary directories are used. Users should upgrade to CVAT 2.40.0 or a later version to receive a patch. No known workarounds are available.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00297 22nd percentileScored 2026-11-07
Fix Fixed cvat (cvat-ai): 2.40.0

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Partial

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 2.40.02.40.0Patch availableCNA
  • cvat Vendorcvat-ai Affected 2.2.0 to before 2.40.0 Fixed in 2.40.0 Patch available CNA

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:cvat:computer_vision_annotation_tool:*:*:*:*:*:*:*:*2.2.0 to before 2.40.0Vulnerablecvat-ai
  • cpe:2.3:a:cvat:computer_vision_annotation_tool:*:*:*:*:*:*:*:* Versions 2.2.0 to before 2.40.0 Vulnerable ·cvat-ai

Remediation

  • Fix · CNA cvat (cvat-ai) Fixed in 2.40.0

Timeline

  1. 2026-10-02 Threatist record created from CVE-2025-49135

References

Patch 1

Advisory 1

  • 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-2026-18940 CVAT vulnerable to XSS via skeleton SVG images CVSS 4.0HIGH 8.6
  • TI-2024-24691 CVAT SSRF via custom cloud storage endpoints CVSS 3.1HIGH 8.5
See all 15 →

Sources

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