CVE-2026-7644— ChatGPTNextWeb NextChat actions.ts addMcpServer improper authorization
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I. Basic Information for CVE-2026-7644
Vulnerability Information
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Vulnerability Title
ChatGPTNextWeb NextChat actions.ts addMcpServer improper authorization
Source: NVD (National Vulnerability Database)
Vulnerability Description
A vulnerability has been found in ChatGPTNextWeb NextChat up to 2.16.1. Affected is the function addMcpServer of the file app/mcp/actions.ts. The manipulation leads to improper authorization. Remote exploitation of the attack is possible. The exploit has been disclosed to the public and may be used. The project was informed of the problem early through an issue report but has not responded yet.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L
Source: NVD (National Vulnerability Database)
Vulnerability Type
授权机制不恰当
Source: NVD (National Vulnerability Database)
Vulnerability Title
NextChat 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
NextChat是NextChat开源的一个用于快速部署私人 ChatGPT 网页应用的项目。 NextChat 2.16.1及之前版本存在安全漏洞，该漏洞源于app/mcp/actions.ts文件中addMcpServer函数存在授权不当，可能导致远程攻击。
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 |
|---|---|---|---|---|
| ChatGPTNextWeb | NextChat | 2.16.0 | - |
II. Public POCs for CVE-2026-7644
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|---|
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- CVE-2026-7644 | ChatGPTNextWeb NextChat up to 2.16.1 app/mcp/actions.ts addMcpServer improper authorization (Issue 6757)vdb-entrytechnical-description
- https://nvd.nist.gov/vuln/detail/CVE-2026-7644
IV. Related Vulnerabilities
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Same vendor: ChatGPTNextWeb
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