---
id: CVE-2026-105238
title: A flaw has been found in ChatGPTNextWeb NextChat up to 2.16.1
summary: >-
  A flaw has been found in ChatGPTNextWeb NextChat up to 2.16.1. This
  vulnerability affects the function proxyHandler of the file app/api/proxy.ts
  of the component Proxy Fallback Handler. This manipulation of the argument
  x-base-url causes…
severity: high
cvss: 7.3
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L'
cwe:
  - CWE-918
vendor: ChatGPTNextWeb
product: NextChat
affected:
  - NextChat 2.16.0
  - NextChat 2.16.1
published: '2026-10-05'
updated: '2026-10-05'
sourceUpdated: '2026-10-05T07:16:30.180'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-105238'
references:
  - url: 'https://github.com/ChatGPTNextWeb/NextChat/'
    label: cna@vuldb.com
  - url: 'https://github.com/ChatGPTNextWeb/NextChat/issues/6813'
    label: cna@vuldb.com
  - url: 'https://github.com/ChatGPTNextWeb/NextChat/pull/6884'
    label: cna@vuldb.com
  - url: 'https://vuldb.com/cve/CVE-2026-105238'
    label: cna@vuldb.com
  - url: 'https://vuldb.com/submit/975707'
    label: cna@vuldb.com
  - url: 'https://vuldb.com/vuln/413450'
    label: cna@vuldb.com
  - url: 'https://vuldb.com/vuln/413450/cti'
    label: cna@vuldb.com
tags:
  - nvd
  - cve.org
ingestedAt: '2026-10-05T07:14:48.256Z'
---

## Overview

A flaw has been found in ChatGPTNextWeb NextChat up to 2.16.1. This vulnerability affects the function proxyHandler of the file app/api/proxy.ts of the component Proxy Fallback Handler. This manipulation of the argument x-base-url causes server-side request forgery. It is possible to initiate the attack remotely. The exploit has been published and may be used. The pull request to fix this issue awaits acceptance.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.