CVE-2026-7644mediumCWE-266CWE-285

CVE-2026-7644: medium-severity vulnerability in ChatGPTNextWeb NextChat

ChatGPTNextWeb NextChat actions.ts addMcpServer improper authorization

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33Vexday Risk Score

No sign of exploitation. It has a public proof of concept.

ssvc Attendcvss 6.9epss 0.3%
from disclosure to weapon
Published on NVDMay 2
victimsOct 20
Appeared in 1 incident(s) we investigated
Zeabur
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.
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P
Affected products
ChatGPTNextWeb · NextChat
⚠ Public resources, to assess the exposure of systems you control or are authorized to test. Test only with authorization.
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