CVE-2026-7643— ChatGPTNextWeb NextChat API Endpoint Next.js cross-domain policy
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及之前版本存在访问控制错误漏洞，该漏洞源于Next.js文件中未知函数存在跨域策略不当，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-2026-7643
Vulnerability Information
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Vulnerability Title
ChatGPTNextWeb NextChat API Endpoint Next.js cross-domain policy
Source: CVE Program / CVE List V5
Vulnerability Description
A flaw has been found in ChatGPTNextWeb NextChat up to 2.16.1. This impacts an unknown function of the file Next.js of the component API Endpoint. Executing a manipulation can lead to permissive cross-domain policy with untrusted domains. The attack may be launched remotely. The exploit has been published 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:R/S:U/C:N/I:L/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
过度许可的跨域白名单
Source: CVE Program / CVE List V5
Vulnerability Title
NextChat 访问控制错误漏洞
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及之前版本存在访问控制错误漏洞，该漏洞源于Next.js文件中未知函数存在跨域策略不当，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-2026-7643
| # | POC Description | Source Link | Shenlong Link |
|---|
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Proof of Concept for CVE-2026-7643 (1)
IV. Related Vulnerabilities
Same product: NextChat
-
CVE-2026-82639
NextChat 2.15.8 through 2.16.1 OpenAI API Key Disclosure -
CVE-2026-7644
ChatGPTNextWeb NextChat actions.ts addMcpServer improper aut -
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-2026-7644
ChatGPTNextWeb NextChat actions.ts addMcpServer improper aut -
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-942
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V. Comments for CVE-2026-7643
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