fix(security): harden open proxy fallback against SSRF and key leak - #6859
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Solaris-star wants to merge 1 commit into
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fix(security): harden open proxy fallback against SSRF and key leak#6859Solaris-star wants to merge 1 commit into
Solaris-star wants to merge 1 commit into
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The fallback proxy accepted any x-base-url without auth and used a substring check for api.openai.com, allowing unauthenticated SSRF and server API key exfiltration via attacker hosts containing that string. Require auth like other providers, parse x-base-url as a real URL, block private/loopback/CGNAT/metadata hosts, and only inject the server OpenAI key when the hostname is exactly api.openai.com. Fixes ChatGPTNextWeb#6813 Fixes ChatGPTNextWeb#6814 Signed-off-by: Solaris-star <820622658@qq.com>
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Summary
The open proxy fallback (
app/api/proxy.ts) had two related issues:x-base-urlto an arbitrary URL (including internal/metadata hosts) and the server would fetch it.baseUrl.includes("api.openai.com")injected the server OpenAI key for attacker hosts such ashttp://attacker.com?q=api.openai.com.Changes
auth()like other provider handlersx-base-urlwith the URL constructor (http/https only)100.64/10, metadata-ish hosts)hostname === "api.openai.com"Testing
Fixes #6813
Fixes #6814