CVE-2026-7643

ChatGPTNextWeb NextChat API Endpoint Next.js cross-domain policy

MEDIUM
4.3
CVSS Score
Published: May 2, 2026 at 02:45 PM UTC
Updated: October 26, 2026 at 08:10 PM UTC
1 product affected across 1 vendorNextChat

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Severity
MEDIUM4.3
Exploit prediction
EPSS 0.2%
SSVC
PoC

Description

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Remediation

No guide yet

No remediation guidance has been written for this CVE yet, and no fixed version or vendor advisory is recorded against it.

References (5)

VDB Entry
Source: cverecord
https://vuldb.com/vuln/360755
SignaturePermissions Required
Source: cverecord
https://vuldb.com/vuln/360755/cti
Third Party Advisory
Source: cverecord
https://vuldb.com/submit/806833
ExploitIssue Tracking
Source: cverecord
https://github.com/ChatGPTNextWeb/NextChat/issues/6756

SSVC — Action Prioritization

SSVCPoCNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

4.3MEDIUMVulDB
Vector?

Quick Info

StatusDEFERRED
CWE
CWE-942CWE-346

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