CVE-2026-7644: Improper Authorization in ChatGPTNextWeb NextChat
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.
AI Analysis
Technical Summary
This vulnerability affects the addMcpServer function in ChatGPTNextWeb NextChat (up to version 2.16.1) and results in improper authorization. Remote attackers can exploit this issue without authentication or user interaction, potentially allowing unauthorized actions within the application. The vulnerability was reported early to the project but remains unaddressed, and no official patch or remediation guidance is currently available.
Potential Impact
The improper authorization flaw allows remote attackers to perform unauthorized actions in the affected NextChat application. While the exact impact is not detailed, the CVSS 4.0 base score of 6.9 (medium severity) indicates a significant security risk that could lead to unauthorized access or manipulation of application functions. There are no known exploits in the wild at this time.
Mitigation Recommendations
No official fix or patch is currently available, and the vendor has not responded to the issue report. Users should monitor the vendor's communications for updates and consider restricting access to the affected functionality or deploying compensating controls until a patch is released. Patch status is not yet confirmed — check the vendor advisory for current remediation guidance.
CVE-2026-7644: Improper Authorization in ChatGPTNextWeb NextChat
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.
CVSS v4.0
Score 6.9medium
Affected software
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability affects the addMcpServer function in ChatGPTNextWeb NextChat (up to version 2.16.1) and results in improper authorization. Remote attackers can exploit this issue without authentication or user interaction, potentially allowing unauthorized actions within the application. The vulnerability was reported early to the project but remains unaddressed, and no official patch or remediation guidance is currently available.
Potential Impact
The improper authorization flaw allows remote attackers to perform unauthorized actions in the affected NextChat application. While the exact impact is not detailed, the CVSS 4.0 base score of 6.9 (medium severity) indicates a significant security risk that could lead to unauthorized access or manipulation of application functions. There are no known exploits in the wild at this time.
Mitigation Recommendations
No official fix or patch is currently available, and the vendor has not responded to the issue report. Users should monitor the vendor's communications for updates and consider restricting access to the affected functionality or deploying compensating controls until a patch is released. Patch status is not yet confirmed — check the vendor advisory for current remediation guidance.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- VulDB
- Date Reserved
- 2026-05-01T16:34:02.930Z
- Cvss Version
- 4.0
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 69f612efcbff5d8610ef5877
Added to database: 5/2/2026, 3:06:23 PM
Last enriched: 5/10/2026, 2:15:26 AM
Last updated: 6/16/2026, 11:26:25 PM
Views: 129
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