Goal Reached Thanks to every supporter — we hit 100%!

Goal: 1000 CNY · Raised: 1359 CNY

100%
Buy Us a Coffee

CVE-2026-65986— CVAT has stored XSS via annotation guide assets

Quick assessment

Affected
cvat-ai cvat
Exploitation
Public or AI PoC available; prioritize validation
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组织开源的一款计算机视觉标注工具。 cvat.ai CVAT 2.5.0版本至2.66.0版本存在安全漏洞，该漏洞源于对注释指南附件的Content-Type处理不当，导致浏览器将上传文件作为HTML页面执行其中的JavaScript，容易受到跨站脚本攻击。

CVSS 8.5 · High EPSS 0.40% · P32

Affected Version Matrix 1

VendorProduct Version RangeStatus
cvat-ai cvat >= 2.5.0, < 2.67.0 affected
Get alerts for future matching vulnerabilities Log in to subscribe

I. Basic Information for CVE-2026-65986

Vulnerability Information
Have questions about the vulnerability? See if Shenlong's analysis helps!
View Shenlong Deep Dive ↗

Although we use advanced large model technology, its output may still contain inaccurate or outdated information.Shenlong tries to ensure data accuracy, but please verify and judge based on the actual situation.

Vulnerability Title
CVAT has stored XSS via annotation guide assets
Source: CVE Program / CVE List V5
Vulnerability Description
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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N
Source: CVE Program / CVE List V5
Vulnerability Type
在Web页面生成时对输入的转义处理不恰当(跨站脚本)
Source: CVE Program / CVE List V5
Vulnerability Title
cvat.ai CVAT 任意文件上传漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
cvat-ai CVAT是cvat-ai组织开源的一款计算机视觉标注工具。 cvat.ai CVAT 2.5.0版本至2.66.0版本存在安全漏洞，该漏洞源于对注释指南附件的Content-Type处理不当，导致浏览器将上传文件作为HTML页面执行其中的JavaScript，容易受到跨站脚本攻击。
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 >= 2.5.0, < 2.67.0 -

II. Public POCs for CVE-2026-65986

# POC Description Source Link Shenlong Link
AI-Generated POC Premium
Qwen3.6-35B-A3B · 6660 chars
Pro+ exclusive includes:
Vulnerability reproduction recording (real sandbox build + trigger, exclusive)
In-depth vulnerability mechanism
Trigger conditions & impact
Full executable POC code
Exploit chain & mitigation
POC zip download
100+ AI POC generations per month

III. Intelligence Information for CVE-2026-65986

请登录查看更多情报信息。

Patches & Fixes for CVE-2026-65986 (1)

Vendor Advisories for CVE-2026-65986 (1)

IV. Related Vulnerabilities

Same product: cvat
Same vendor: cvat-ai
Same weakness: CWE-79

V. Comments for CVE-2026-65986

No comments yet

Leave a comment