CVE-2023-49785: critical vulnerability in ChatGPTNextWeb NextChat
NextChat vulnerable to Server-Side Request Forgery and Cross-site Scripting
Published · Updated
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100Vexday Risk Score
Patch now. It exploitation observed by VulnCheck and has a working public exploit.
ssvc Actcvss 9.1epss 83%
from disclosure to weapon663 days
Published on NVDMar 11
1st PoC+663d
VulnCheck+26d
NextChat, also known as ChatGPT-Next-Web, is a cross-platform chat user interface for use with ChatGPT. Versions 2.11.2 and prior are vulnerable to server-side request forgery and cross-site scripting. This vulnerability enables read access to internal HTTP endpoints but also write access using HTTP POST, PUT, and other methods. Attackers can also use this vulnerability to mask their source IP by forwarding malicious traffic intended for other Internet targets through these open proxies. As of time of publication, no patch is available, but other mitigation strategies are available. Users may avoid exposing the application to the public internet or, if exposing the application to the internet, ensure it is an isolated network with no access to any other internal resources.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
Affected products
ChatGPTNextWeb · NextChatpublic PoCs found — 1
githubgithub.com/hyunnna/NextChat_SSRF_CVE-2023-49785★ 0⚠ Public resources, to assess the exposure of systems you control or are authorized to test. Test only with authorization.
Related CVEs — ChatGPTNextWeb NextChat
In the same product, most dangerous first.
CVE-2026-82639HIGHNextChat 2.15.8 through 2.16.1 OpenAI API Key DisclosureEPSS 0.5%CVE-2026-105238MEDIUMChatGPTNextWeb NextChat Proxy Fallback proxy.ts proxyHandler server-side request forgeryEPSS 0.4%CVE-2026-7177MEDIUMChatGPTNextWeb NextChat route.ts proxyHandler server-side request forgeryEPSS 0.4%CVE-2026-7178MEDIUMChatGPTNextWeb NextChat Artifacts Endpoint route.ts storeUrl server-side request forgeryEPSS 0.3%CVE-2026-7644MEDIUMChatGPTNextWeb NextChat actions.ts addMcpServer improper authorizationEPSS 0.3%CVE-2026-7643MEDIUMChatGPTNextWeb NextChat API Endpoint Next.js cross-domain policyEPSS 0.2%
References
https://github.com/ChatGPTNextWeb/ChatGPT-Next-Webhttps://github.com/ChatGPTNextWeb/ChatGPT-Next-Web/issues/4283https://github.com/ChatGPTNextWeb/ChatGPT-Next-Web/pull/4285https://www.horizon3.ai/attack-research/attack-blogs/nextchat-an-ai-chatbot-that-lets-you-talk-to-anyone-you-want-to/https://www.vicarius.io/vsociety/posts/hacking-ai-chatbots-for-fun-and-learning-analyzing-an-unauthenticated-ssrf-and-reflected-xss-in-chatgpt-next-web-cve-2023-49785