CVE-2026-7643

MEDIUM 4.3

ChatGPTNextWeb NextChat API Endpoint Next.js cross-domain policy

CVSS Score

4.3

EPSS Score

0.0%

EPSS Percentile

0th

A flaw has been found in ChatGPTNextWeb NextChat up to 2.16.1. This impacts an unknown function of the file Next.js of the component API Endpoint. Executing a manipulation can lead to permissive cross-domain policy with untrusted domains. The attack may be launched remotely. The exploit has been published and may be used. The project was informed of the problem early through an issue report but has not responded yet.

CWE	CWE-942 CWE-346
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:R/S:U/C:N/I:L/A:N/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/360755 vuldb.com: https://vuldb.com/vuln/360755/cti vuldb.com: https://vuldb.com/submit/806833 github.com: https://github.com/ChatGPTNextWeb/NextChat/issues/6756 github.com: https://github.com/ChatGPTNextWeb/NextChat/

Credits

🔍 Yu_Bao (VulDB User) VulDB CNA Team