CVE-2026-7644— ChatGPTNextWeb NextChat actions.ts addMcpServer improper authorization
Quick assessment
Affected
ChatGPTNextWeb NextChat
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.
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。
Possible ATT&CK Techniques 1 AI
T1190 · Exploit Public-Facing ApplicationAffected Version Matrix 2
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| ChatGPTNextWeb | NextChat | 2.16.0 |
affected |
2.16.1 |
affected |
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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: CVE Program / CVE List V5
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: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L
Source: CVE Program / CVE List V5
Vulnerability Type
授权机制不恰当
Source: CVE Program / CVE List V5
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
| # | POC Description | Source Link | Shenlong Link |
|---|
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Proof of Concept for CVE-2026-7644 (1)
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🔗 Unauthenticated Remote Code Execution · Issue #6757 · ChatGPTNextWeb/NextChat Read full article exploit issue-tracking
IV. Related Vulnerabilities
Same product: NextChat
-
CVE-2026-82639
NextChat 2.15.8 through 2.16.1 OpenAI API Key Disclosure -
CVE-2026-7643
ChatGPTNextWeb NextChat API Endpoint Next.js cross-domain po -
CVE-2026-7178
ChatGPTNextWeb NextChat Artifacts Endpoint route.ts storeUrl -
CVE-2026-7177
ChatGPTNextWeb NextChat route.ts proxyHandler server-side re -
CVE-2023-49785
NextChat vulnerable to Server-Side Request Forgery and Cross
Same vendor: ChatGPTNextWeb
-
CVE-2026-82639
NextChat 2.15.8 through 2.16.1 OpenAI API Key Disclosure -
CVE-2026-7643
ChatGPTNextWeb NextChat API Endpoint Next.js cross-domain po -
CVE-2026-7178
ChatGPTNextWeb NextChat Artifacts Endpoint route.ts storeUrl -
CVE-2026-7177
ChatGPTNextWeb NextChat route.ts proxyHandler server-side re -
CVE-2024-38514
NextChat Server-Side Request Forgery (SSRF)
Same weakness: CWE-285
-
CVE-2026-105121
OpenAM before 16.1.3 Improper Authorization in Delegated Ses -
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OpenAM before 16.1.3 PKCE Enforcement Bypass via OAuth 2.0 H -
CVE-2026-103858
MISP Incomplete Thread Authorization Allows Unauthorized Rea -
CVE-2026-103532
immich-app Immich Shared Link Preview access.ts checkSharedL -
CVE-2026-93547
Missing Authorization Check in Vaadin Spreadsheet Allows Cel
V. Comments for CVE-2026-7644
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