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CVE-2026-39411— LobeHub has an unauthenticated authentication bypass on `webapi` routes via forgeable `X-lobe-chat-auth` header

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之前版本存在安全漏洞，该漏洞源于WebAPI身份验证层信任仅经过XOR混淆的客户端控制标头，可能导致攻击者伪造任意身份验证有效载荷并绕过受保护路由的身份验证。

CVSS 5.0 · Medium EPSS 0.19% · P8
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I. Basic Information for CVE-2026-39411

Vulnerability Information
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Vulnerability Title
LobeHub has an unauthenticated authentication bypass on `webapi` routes via forgeable `X-lobe-chat-auth` header
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, the webapi authentication layer trusts a client-controlled X-lobe-chat-auth header that is only XOR-obfuscated, not signed or otherwise authenticated. Because the XOR key is hardcoded in the repository, an attacker can forge arbitrary auth payloads and bypass authentication on protected webapi routes. Affected routes include /webapi/chat/[provider], /webapi/models/[provider], /webapi/models/[provider]/pull, and /webapi/create-image/comfyui. This vulnerability is fixed in 2.1.48.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:L
Source: CVE Program / CVE List V5
Vulnerability Type
认证机制不恰当
Source: CVE Program / CVE List V5
Vulnerability Title
LobeHub 安全漏洞
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之前版本存在安全漏洞，该漏洞源于WebAPI身份验证层信任仅经过XOR混淆的客户端控制标头，可能导致攻击者伪造任意身份验证有效载荷并绕过受保护路由的身份验证。
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)

II. Public POCs for CVE-2026-39411

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III. Intelligence Information for CVE-2026-39411

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Patches & Fixes for CVE-2026-39411 (1)

Vendor Advisories for CVE-2026-39411 (1)

IV. Related Vulnerabilities

Same product: lobehub
Same vendor: lobehub
Same weakness: CWE-287

V. Comments for CVE-2026-39411

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