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CVE-2026-42045— LobeHub: Cross-Site Scripting(XSS) escalate to Remote Code Execution(RCE)

Quick assessment

Affected
lobehub lobehub
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.

LobeHub是LobeHub开源的一个全平台AI对话框架。 LobeHub 2.1.48之前版本存在跨站脚本漏洞，该漏洞源于处理自定义标签时未正确过滤，可能导致跨站脚本攻击和通过IPC接口执行任意系统命令。

CVSS 6.2 · Medium EPSS 0.35% · P27

Affected Version Matrix 1

VendorProduct Version RangeStatus
lobehub lobehub < 2.1.48 affected
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I. Basic Information for CVE-2026-42045

Vulnerability Information
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Vulnerability Title
LobeHub: Cross-Site Scripting(XSS) escalate to Remote Code Execution(RCE)
Source: CVE Program / CVE List V5
Vulnerability Description
LobeHub is a work-and-lifestyle space to find, build, and collaborate with agent teammates that grow with you. Prior to 2.1.48, when LobeChat processes custom tags in the Render process of src/features/Portal/Artifacts/Body/Renderer/index.tsx, if no type match is found, it will choose to call the default method, HTMLRenderer, for HTML rendering. If an attacker can induce the LLM to output content containing malicious tags, an XSS vulnerability can be created on the client side. Additionally, Lobechat's Electron main process exposes an IPC interface called runCommand, used to invoke system commands. This interface allows arbitrary command execution and does not filter the command parameter. Therefore, if an attacker can obtain a handle to window.parent.electronAPI via XSS and call the runCommand method of the IPC, the ipcMain process can execute arbitrary system commands with the current user's privileges. This vulnerability is fixed in 2.1.48.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:H/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开源的一个全平台AI对话框架。 LobeHub 2.1.48之前版本存在跨站脚本漏洞，该漏洞源于处理自定义标签时未正确过滤，可能导致跨站脚本攻击和通过IPC接口执行任意系统命令。
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 lobehub < 2.1.48 -

II. Public POCs for CVE-2026-42045

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III. Intelligence Information for CVE-2026-42045

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Vendor Advisories for CVE-2026-42045 (1)

IV. Related Vulnerabilities

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

V. Comments for CVE-2026-42045

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