CVE-2026-7644: A vulnerability has been found in ChatGPTNextWeb NextChat up to 2.16.1. Affected is the function addMcpServer of the fil
highvulnerability
security
Summary
A vulnerability (CVE-2026-7644) was found in ChatGPTNextWeb NextChat version 2.16.1 and earlier, affecting the addMcpServer function in the app/mcp/actions.ts file. The flaw allows improper authorization (meaning the system fails to correctly verify who should have access to certain features), and it can be exploited remotely by anyone without needing special permissions. The vulnerability has been publicly disclosed, and the developers have been notified but have not yet responded.
Vulnerability Details
CVSS Score
7.3(high)
EPSS (30-day exploit probability)
EPSS: 0.0%
CVSS Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L
Attack Vector
network
Attack Complexity
low
Privileges Required
none
User Interaction
none
Disclosure Date
May 2, 2026
Classification
Attack Type
Other
Attack SophisticationModerate
Impact (CIA+S)
integrityconfidentiality
Affected Vendors
Related Issues
Monthly digest — independent AI security research
Original source: https://nvd.nist.gov/vuln/detail/CVE-2026-7644
First tracked: May 2, 2026 at 02:07 PM
Classified by LLM (prompt v3) · confidence: 72%