SB2026042491 - Multiple vulnerabilities in Computer Vision Annotation Tool (CVAT)

Description

This security bulletin contains information about 2 vulnerabilities.

1) Privilege Defined With Unsafe Actions (CVE-ID: CVE-2026-23526)

CWE-ID: CWE-267 - Privilege Defined With Unsafe Actions

CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear

The vulnerability allows a remote user to escalate privileges on the system.

The vulnerability exists due to application does not properly impose security restrictions. A remote administrator can freely change their permissions and gain full access to the data in the CVAT instance.

2) Stored cross-site scripting (CVE-ID: CVE-2026-23516)

CWE-ID: CWE-79 - Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N/E:U/U:Clear

The disclosed vulnerability allows a remote attacker to perform cross-site scripting (XSS) attacks.

The vulnerability exists due to insufficient sanitization of user-supplied data within skeleton SVG images. A remote attacker can inject and execute arbitrary HTML and script code in user's browser in context of vulnerable website.

Successful exploitation of this vulnerability may allow a remote attacker to steal potentially sensitive information, change appearance of the web page, perform phishing and drive-by-download attacks.

Remediation

Install update from vendor's website.

References

• https://github.com/cvat-ai/cvat/security/advisories/GHSA-7pvv-w55f-qmw7
• https://github.com/cvat-ai/cvat/security/advisories/GHSA-3m7p-wx65-c7mp