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CRITICAL: SSRF to Cloud Metadata Exfiltration & Internal Network Takeover (CVSS 9.1) #401

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CRITICAL: SSRF to Cloud Metadata Exfiltration & Internal Network Takeover (CVSS 9.1) #401

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15 changes: 15 additions & 0 deletions workflow/packages/backend/api/src/app/ai/ai-provider-proxy.ts
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Original file line number Diff line number Diff line change
Expand Up @@ -43,6 +43,21 @@ export const proxyController: FastifyPluginAsyncTypebox = async (
request.headers as Record<string, string | string[] | undefined>,
aiProvider.config.defaultHeaders,
)
// --- SECURITY FIX: SSRF PROTECTION ---
// Prevent access to internal/private IP addresses (e.g., Cloud Metadata)
const parsedUrl = new URL(url);
const forbiddenIps = ['127.0.0.1', '169.254.169.254', 'localhost'];
const isPrivateIp = (hostname: string) => {
return forbiddenIps.includes(hostname) ||
hostname.startsWith('10.') ||
hostname.startsWith('192.168.') ||
hostname.startsWith('172.');
};

if (isPrivateIp(parsedUrl.hostname)) {
throw new Error("Security Alert: Access to internal network resources is restricted.");
}
// --- END SECURITY FIX ---
const response = await fetch(url, {
method: request.method,
headers: cleanHeaders,
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