CVE-2026-65986

HIGH CVSS 4.0: 8.5 EPSS 0.24%
Updated Aug 05, 2026
Cvat
Parameter Value
CVSS 8.5 (HIGH)
Affected Versions 2.5.0 — 2.66.0
Fixed In 2.67.0
Type CWE-434 (Unrestricted File Upload), CWE-79 (Cross-Site Scripting (XSS))
Vendor Cvat
Public PoC No

CVAT is an open source interactive video and image annotation tool for computer vision. Versions 2.5.0 through 2.66.0 contain a XSS vulnerability that can be accessed through annotation guide assets. When CVAT serves the files attached to an annotation guide, it labels them with a media type ( Content-Type ) that the attacker can influence, so instead of treating an uploaded file as plain data, the victim's browser can be told to treat it as an HTML page and run any JavaScript inside it.

This issue has been fixed in version 2.67.0.

Attack Parameters

Attack Vector
Network
Can be exploited remotely
Attack Complexity
Low
Easy to exploit
Attack Requirements
None
No additional conditions
Privileges Required
Low
Basic privileges needed
User Interaction
Passive
Minimal interaction

Impact Assessment

Confidentiality
High
Complete data leak
Integrity
High
Complete data modification
Availability
None
No disruption

CVSS Vector v4.0

Vulnerable Products

cvat-ai:cvat