CVE-2026-7644

HIGH 7.3

ChatGPTNextWeb NextChat actions.ts addMcpServer improper authorization

CVSS Score

7.3

EPSS Score

0.0%

EPSS Percentile

0th

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.

CWE	CWE-285 CWE-266
Vendor	chatgptnextweb
Product	nextchat
Published	May 2, 2026

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CVSS v3 Breakdown

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L/E:P/RL:X/RC:R

Attack Vector

Attack Complexity

Privileges Required

User Interaction

Scope

Confidentiality

Integrity

Availability

Affected Versions

ChatGPTNextWeb / NextChat

2.16.0 2.16.1

References

NVD ↗ CVE.org ↗ EPSS Data ↗

vuldb.com: https://vuldb.com/vuln/360756 vuldb.com: https://vuldb.com/vuln/360756/cti vuldb.com: https://vuldb.com/submit/806851 github.com: https://github.com/ChatGPTNextWeb/NextChat/issues/6757 github.com: https://github.com/ChatGPTNextWeb/NextChat/

Credits

🔍 Yu.Bao (VulDB User) VulDB CNA Team