CVE-2026-65057

Received Received - Intake

Server-Side Request Forgery in Healthcheck Endpoint

Publication date: 2026-07-21

Last updated on: 2026-07-21

Assigner: VulnCheck

Description

Keep (commit 91c75e0) contains a server-side request forgery vulnerability that allows unauthenticated attackers to make the backend issue arbitrary HTTP requests by supplying attacker-controlled host values to the unprotected healthcheck endpoint. Attackers can send a crafted JSON payload with a malicious host parameter to cause the backend to issue outbound requests to internal services or cloud metadata endpoints, enabling theft of cloud credentials and internal network reconnaissance.

CVSS Scores

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Meta Information

Published

2026-07-21

Last Modified

2026-07-21

Generated

2026-07-22

AI Q&A

2026-07-22

EPSS Evaluated

N/A

NVD

CVE-2026-65057

Affected Vendors & Products

Currently, no data is known.

Helpful Resources

Exploitability

CWE

KEV

CWE ID	Description
CWE-918	The web server receives a URL or similar request from an upstream component and retrieves the contents of this URL, but it does not sufficiently ensure that the request is being sent to the expected destination.

Attack-Flow Graph

Executive Summary

This vulnerability is a server-side request forgery (SSRF) flaw in a commit labeled Keep (commit 91c75e0). It allows unauthenticated attackers to manipulate the backend into making arbitrary HTTP requests by providing malicious host values to an unprotected healthcheck endpoint. Attackers can send a crafted JSON payload with a malicious host parameter to force the backend to issue outbound requests to internal services or cloud metadata endpoints.

Detection Guidance

To detect this SSRF vulnerability, monitor network traffic for outbound requests from the healthcheck endpoint to internal or unexpected hosts. Check server logs for unusual host parameters in JSON payloads sent to the healthcheck endpoint. Use tools like tcpdump or Wireshark to inspect traffic originating from the vulnerable service.

Impact Analysis

This vulnerability can enable attackers to steal cloud credentials and perform internal network reconnaissance. By exploiting the SSRF flaw, attackers may access sensitive internal services or cloud metadata endpoints, potentially leading to data breaches, unauthorized access, or further network compromise.

Mitigation Strategies

Immediately restrict access to the healthcheck endpoint to trusted networks or internal systems. Validate and sanitize all host parameters in JSON payloads to prevent SSRF attacks. Update the application to enforce strict allowlists for host values and disable outbound requests from the healthcheck endpoint.

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