CVE-2026-105238

High

Description

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.

SeverityHigh

CVSS7.3

Exploit probability—

ProductNextchat

PublishedOct 5, 2026

First seenOct 5, 2026

Weakness typeCWE-918Server-side request forgery (SSRF)

How to fix

Patches

github.com/ChatGPTNextWeb/NextChat/pull/6884

Affected products

Product	Affected versions	Fixed in
nextchat nextchat	2.16.0, 2.16.1	—

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