| Título | Casdoor v2.356.0 Server-Side Request Forgery |
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| Descrição | Webhook SSRF (Server-Side Request Forgery)
**Evidence:**
```go
req, err := http.NewRequest(webhook.Method, webhook.Url, body)
// ...
resp, err := client.Do(req) // No URL validation, no internal network blocking
```
Admin-configured webhook URLs are fetched without any restriction on target address. No SSRF protections are in place.
**Attack scenario:** An attacker who gains org-admin access configures a webhook URL pointing to `http://x.x.x.x/latest/meta-data/` (AWS metadata endpoint) or internal services, exfiltrating cloud credentials or scanning internal infrastructure.
**Fix:** Validate webhook URLs against a denylist of private/reserved IP ranges. Use a dedicated HTTP client that resolves DNS and blocks connections to internal addresses.
--- |
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| Utilizador | Ghufran Khan (UID 95493) |
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| Submissão | 17/03/2026 14h25 (há 20 dias) |
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| Moderação | 03/04/2026 09h26 (17 days later) |
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| Estado | Aceite |
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| Entrada VulDB | 355073 [Casdoor 2.356.0 Webhook URL Elevação de Privilégios] |
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| Pontos | 17 |
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