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CVE-2025-49135

CVAT missing validation for in-progress backup upload names

MEDIUM
6.5
CVSS Score
Published: June 25, 2025 at 03:05 PM UTC
Updated: June 17, 2026 at 09:30 AM UTC
2 products affected across 2 vendorsComputer Vision Annotation ToolCvat

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Severity
MEDIUM6.5
Exploit prediction
EPSS 0.3%
SSVC
No known exploit

Description

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Computer Vision Annotation Tool· Cvat
95%
2.2.0 ≤ v < 2.40.0
Affected range stops below 2.40.0, so it looks safe — our inference, not a vendor statement
Cvat· Cvat AI
60%
v < 2.40.0
Affected range stops below 2.40.0, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

Patch and advisory references

References (2)

x_refsource_MISCPatch
Source: [email protected]
https://github.com/cvat-ai/cvat/commit/dbafd9c0287489bea00e1db626f64b107f90bfc9
x_refsource_CONFIRMVendor Advisory
Source: [email protected]
https://github.com/cvat-ai/cvat/security/advisories/GHSA-frpr-5w6q-hh4f

SSVC — Action Prioritization

SSVCNo known exploitNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

6.5MEDIUM[email protected]
Attack Vector
NETWORK
Complexity
LOW
Privileges
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
NONE
Availability
NONE
Vector?

Quick Info

StatusANALYZED
CWE
CWE-639

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