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CVE-2026-72594— lobehub lobe-chat - Stored Cross-Site Scripting via Unrestricted SVG Avatar Upload

Quick assessment

Affected
lobehub lobe-chat
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.

LobeHub是LobeHub团队开源的一个全平台AI对话框架。 LobeHub 2.2.13及之前版本存在跨站脚本漏洞，该漏洞源于头像上传处理程序根据原始文件名获取存储文件扩展名和S3内容类型，而未检查文件内容，导致攻击者可上传包含脚本元素的SVG文件，当用户查看攻击者个人资料或头像时执行任意JavaScript，造成存储型跨站脚本攻击。

CVSS 7.6 · High EPSS 0.28% · P19

Possible ATT&CK Techniques 1 AI

T1059.007 · JavaScript

Affected Version Matrix 1

VendorProduct Version RangeStatus
lobehub lobe-chat ≤ 2.2.13 affected
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I. Basic Information for CVE-2026-72594

Vulnerability Information
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Vulnerability Title
lobehub lobe-chat - Stored Cross-Site Scripting via Unrestricted SVG Avatar Upload
Source: CVE Program / CVE List V5
Vulnerability Description
A stored cross-site scripting (XSS) vulnerability in lobehub/lobe-chat through v2.2.13 allows a low-privileged authenticated user to inject arbitrary JavaScript into the application by uploading a crafted SVG file as a user avatar.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:L/A: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
LobeHub 跨站脚本漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
LobeHub是LobeHub团队开源的一个全平台AI对话框架。 LobeHub 2.2.13及之前版本存在跨站脚本漏洞，该漏洞源于头像上传处理程序根据原始文件名获取存储文件扩展名和S3内容类型，而未检查文件内容，导致攻击者可上传包含脚本元素的SVG文件，当用户查看攻击者个人资料或头像时执行任意JavaScript，造成存储型跨站脚本攻击。
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
lobehub lobe-chat 0 ~ 2.2.13 -

II. Public POCs for CVE-2026-72594

# POC Description Source Link Shenlong Link
AI-Generated POC Verified env Premium
Reproduced successfully in a real sandbox · Below is the actual recording of building the environment and exploiting the vulnerability.
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claude_code · 5696 chars
GitHub 复现环境（可 clone 直接跑）
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III. Intelligence Information for CVE-2026-72594

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IV. Related Vulnerabilities

Same product: lobe-chat
Same vendor: lobehub
Same weakness: CWE-79

V. Comments for CVE-2026-72594

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