All vulnerabilities
CVE-2026-105238

ChatGPTNextWeb NextChat Proxy Fallback proxy.ts proxyHandler server-side request forgery

ChatGPTNextWeb NextChat
Open in ThreatlineRecord JSON
CVSS
6.9Medium
ExploitationPublic exploit codeCISA's assessment says proof of concept code is public, assessed 5 Oct 2026. Not in the KEV catalogCISA via CVE List
Exploit odds (EPSS)0.39%Chance of exploitation activity in the next 30 days, higher than 32% of CVEs. Scored 23 Oct 2026FIRST EPSS
Fixed inNone listedNo source names a fixed version. Check the vendor advisory below
Published5 Oct 2026Updated 5 Oct 2026CVE List

What fixes it

No source in this snapshot names a fixed version. The vendor advisories under References are the place to check.

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.

Text from CVE List

Affected versions 2

  • NextChataffected: 2.16.0CVE List
  • NextChataffected: 2.16.1CVE List

References 7