SSRF in Chatgptnextweb Nextchat
CVE-2026-105238
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.
Vulnerability class: SSRF (Server-Side Request Forgery)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.3 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L.
EPSS exploit prediction
No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.
Affected products
- Chatgptnextweb Nextchat — versions 2.16.0, 2.16.1
Weakness classification (CWE)
References
- vuldb.com/vuln/413450 (technical-description, vdb-entry)
- vuldb.com/vuln/413450/cti (signature, permissions-required)
- vuldb.com/cve/CVE-2026-105238 (third-party-advisory)
- vuldb.com/submit/975707 (third-party-advisory)
- github.com/ChatGPTNextWeb/NextChat/issues/6813 (issue-tracking, exploit)
- github.com/ChatGPTNextWeb/NextChat/pull/6884 (issue-tracking, patch)
- github.com/ChatGPTNextWeb/NextChat/ (product)
Frequently asked questions
- What is CVE-2026-105238?
- CVE-2026-105238 is a high-severity vulnerability in Chatgptnextweb Nextchat, classified under Server-Side Request Forgery (SSRF). CVSS score: 7.3/10. Published 2026-10-05.
- How severe is CVE-2026-105238?
- High severity. CVSS v3 base score is 7.3 out of 10.