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CVE-2026-23516— CVAT vulnerable to XSS via skeleton SVG images

Quick assessment

Affected
cvat-ai cvat
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

CVAT.ai CVAT是CVAT.ai开源的一个数据处理工具。 CVAT.ai CVAT 2.2.0版本至2.54.0版本存在安全漏洞，该漏洞源于攻击者能够在受害者用户的CVAT UI会话中执行任意JavaScript，可能导致攻击者临时访问受害者用户可访问的所有CVAT资源。

AI Predicted 7.4 Difficulty: Easy EPSS 0.17% · P5
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I. Basic Information for CVE-2026-23516

Vulnerability Information
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Vulnerability Title
CVAT vulnerable to XSS via skeleton SVG images
Source: CVE Program / CVE List V5
Vulnerability Description
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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N
Source: CVE Program / CVE List V5
Vulnerability Type
Web页面属性中脚本转义处理不恰当
Source: CVE Program / CVE List V5
Vulnerability Title
CVAT.ai CVAT 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
CVAT.ai CVAT是CVAT.ai开源的一个数据处理工具。 CVAT.ai CVAT 2.2.0版本至2.54.0版本存在安全漏洞，该漏洞源于攻击者能够在受害者用户的CVAT UI会话中执行任意JavaScript，可能导致攻击者临时访问受害者用户可访问的所有CVAT资源。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
cvat-ai cvat >= 2.2.0, < 2.55.0 -

II. Public POCs for CVE-2026-23516

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III. Intelligence Information for CVE-2026-23516

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Patches & Fixes for CVE-2026-23516 (1)

IV. Related Vulnerabilities

Same product: cvat
Same vendor: cvat-ai
Same weakness: CWE-83

V. Comments for CVE-2026-23516

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