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.
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Fixes

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Workaround

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History

Fri, 21 Aug 2026 19:45:00 +0000

Type Values Removed Values Added
First Time appeared Bluewave-labs
Bluewave-labs checkmate
Vendors & Products Bluewave-labs
Bluewave-labs checkmate

Fri, 21 Aug 2026 18:15:00 +0000

Type Values Removed Values Added
Description 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.
Title Checkmate: Sensitive Bearer Token Exposure via Public Status Pages When showURL Setting is Enabled
Weaknesses CWE-200
CWE-522
References
Metrics cvssV3_1

{'score': 7.5, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N'}


Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: GitHub_M

Published:

Updated: 2026-08-21T21:43:42.303Z

Reserved: 2026-08-07T18:26:53.524Z

Link: CVE-2026-71862

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Received

Published: 2026-08-21T18:16:50.730

Modified: 2026-08-21T18:16:50.730

Link: CVE-2026-71862

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-08-21T20:00:13Z

Weaknesses