Checkmate is an open-source, self-hosted tool designed to track and monitor server hardware, uptime, response times, and incidents in real-time with beautiful visualizations. From 3.3.0 until 3.9.2, enabling the global showURL setting causes the unauthenticated GET /api/v1/status-page/:url endpoint to return complete monitor objects from server/src/controllers/statusPageController.ts. The response includes the secret field used by HttpProvider.ts as an HTTP Authorization credential, even though BaseStatusPage.tsx does not display that value, allowing visitors to extract credentials from the JSON response and use them against monitored services.
This issue is fixed in version 3.9.2.
Attack Parameters
Attack Vector
Network
Can be exploited remotely
Attack Complexity
Low
Easy to exploit
Privileges Required
None
No privileges needed
User Interaction
None
No user interaction needed
Impact Assessment
Confidentiality
High
Complete data leak
Integrity
None
No data modification
Availability
None
No disruption
CVSS Vector v3.1
Weakness Type (CWE)
Vulnerable Products
bluewave-labs:checkmate
References 4
https://github.com/bluewave-labs/Checkmate/commit/cc1814f507041bb0f64845bed5d54…
security-advisories@github.com
https://github.com/bluewave-labs/Checkmate/pull/3758
security-advisories@github.com
https://github.com/bluewave-labs/Checkmate/releases/tag/v3.9.2
security-advisories@github.com
https://github.com/bluewave-labs/Checkmate/security/advisories/GHSA-3m74-8cg9-r…
security-advisories@github.com