Listen to this Post
The CVE-2025-53000 vulnerability exists within the `WebhookUtil.java` component of the Apache EventMesh runtime module. The flaw occurs when the application processes user-supplied URLs for webhook callbacks without sufficient validation. An attacker can provide a crafted URL that points to an internal, non-public resource within the server’s network environment, such as metadata endpoints (e.g., AWS IMDS), internal REST APIs, or file paths (using the `file://` scheme). The vulnerable function then initiates an HTTP request to this specified internal address, allowing the attacker to read sensitive data from these protected endpoints or interact with internal services that were not intended to be exposed, effectively bypassing network security boundaries.
Platform: Apache EventMesh
Version: 1.6.0 – 1.11.0
Vulnerability: SSRF
Severity: Moderate
date: 2025-08-20
Prediction: Patch 2025-09-03
What Undercode Say:
curl -X POST http://vulnerable-eventmesh:10105/endpoint -H "Content-Type: application/json" -d '{"webhookUrl": "http://169.254.169.254/latest/meta-data/"}'
// WebhookUtil.java - Vulnerable code snippet
String url = request.getParameter("webhookUrl");
HttpURLConnection conn = (HttpURLConnection) new URL(url).openConnection();
nmap --script http-internal-ip-discover -p 10105 vulnerable-host
How Exploit:
Craft POST request with internal IP in `webhookUrl` parameter to fetch instance metadata or internal service data.
Protection from this CVE:
Upgrade to 1.12.0. Implement allowlist validation for webhook URLs. Sanitize user input.
Impact:
Internal network enumeration. Sensitive data exposure from internal APIs.
🎯Let’s Practice Exploiting & Learn Patching For Free:
Sources:
Reported By: github.com
Extra Source Hub:
Undercode
