| Título | FlowiseAI Flowise <= 3.0.12 Server-Side Request Forgery (CWE-918) |
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| Descripción | # Technical Details
A Server-Side Request Forgery (SSRF) vulnerability exists in the API Document Loader component `packages/components/nodes/documentloaders/API/APILoader.ts` of FlowiseAI Flowise.
The API Document Loader uses raw axios.get() and axios.post() instead of the secureAxiosRequest wrapper introduced in the DNS Rebinding fix (GHSA-2x8m-83vc-6wv4, commit 643ebf5). This means HTTP_DENY_LIST is completely bypassed for this component. The URL comes directly from user input and flows into axios.get(url) without any IP validation, deny-list check, or DNS rebinding protection. The full response body is returned in pageContent, making this a blind SSRF with full response exfiltration.
# Vulnerable Code
File: packages/components/nodes/documentloaders/API/APILoader.ts (lines 268, 293)
Method: executeGetRequest() and executePostRequest()
Why: Uses raw axios.get(url) and axios.post(url) instead of secureAxiosRequest(). Other components (ApiChain, WebScraperTool, HTTP node) were correctly patched to use secureAxiosRequest/secureFetch but APILoader was missed.
# Reproduction
1. Deploy Flowise with deny list: docker run -d -e HTTP_DENY_LIST="x.x.x.x/32,10.0.0.0/8,172.16.0.0/12,192.168.0.0/16,127.0.0.0/8" -p 3001:3000 flowiseai/flowise:latest
2. Authenticate and get JWT.
3. Trigger SSRF: POST /api/v1/document-store/loader/preview with loaderConfig.url pointing to internal IP (e.g., http://172.17.0.1:9999).
4. Full response body returned in pageContent field despite target IP being in deny list.
# Impact
- Steal cloud metadata (AWS IAM credentials, GCP tokens).
- Scan internal networks, probe internal services.
- Bypass network segmentation - server acts as proxy from trusted network.
- False sense of security - admins configure HTTP_DENY_LIST but this component silently bypasses it. |
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| Fuente | ⚠️ https://gist.github.com/YLChen-007/dda3599bf9e016caabf1b830fac53942 |
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| Usuario | Eric-a (UID 96353) |
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| Sumisión | 2026-03-11 15:06 (hace 3 meses) |
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| Moderación | 2026-05-06 09:41 (2 months later) |
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| Estado | Aceptado |
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| Entrada de VulDB | 361277 [FlowiseAI Flowise hasta 3.0.12 API Document Loader APILoader.ts axios.get pageContent escalada de privilegios] |
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| Puntos | 20 |
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