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.
Published: 2026-05-02
Score: 6.9 Medium
EPSS: < 1% Very Low
KEV: No
Impact: n/a
Action: n/a
AI Analysis

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Remediation

No vendor fix or workaround currently provided.

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Tracking

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Advisories

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History

Tue, 05 May 2026 16:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'poc', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Sat, 02 May 2026 16:45:00 +0000

Type Values Removed Values Added
First Time appeared Chatgptnextweb
Chatgptnextweb nextchat
Vendors & Products Chatgptnextweb
Chatgptnextweb nextchat

Sat, 02 May 2026 15:15:00 +0000

Type Values Removed Values Added
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.
Title ChatGPTNextWeb NextChat actions.ts addMcpServer improper authorization
Weaknesses CWE-266
CWE-285
References
Metrics cvssV2_0

{'score': 7.5, 'vector': 'AV:N/AC:L/Au:N/C:P/I:P/A:P/E:POC/RL:ND/RC:UR'}

cvssV3_0

{'score': 7.3, 'vector': 'CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L/E:P/RL:X/RC:R'}

cvssV3_1

{'score': 7.3, 'vector': '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'}

cvssV4_0

{'score': 6.9, 'vector': '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'}


Subscriptions

Chatgptnextweb Nextchat
cve-icon MITRE

Status: PUBLISHED

Assigner: VulDB

Published:

Updated: 2026-05-04T13:09:05.752Z

Reserved: 2026-05-01T16:34:02.930Z

Link: CVE-2026-7644

cve-icon Vulnrichment

Updated: 2026-05-04T13:08:39.107Z

cve-icon NVD

Status : Deferred

Published: 2026-05-02T15:16:14.373

Modified: 2026-05-05T19:15:06.200

Link: CVE-2026-7644

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-05-02T16:30:46Z

Weaknesses