CVE-2026-71862
Checkmate: Sensitive Bearer Token Exposure via Public Status Pages When showURL Setting is Enabled
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.
INFO
Published Date :
Aug. 21, 2026, 6:16 p.m.
Last Modified :
Oct. 14, 2026, 7:10 p.m.
Remotely Exploit :
Yes !
Source :
[email protected]
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS | 134c704f-9b21-4f2e-91b3-4a467353bcc0 | |||||
| CVSS 3.1 | HIGH | [email protected] | ||||
| CVSS 3.1 | HIGH | MITRE-CVE |
Solution
- Update Checkmate to version 3.9.2.
- Verify the showURL setting is configured securely.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2026-71862.
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-71862 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2026-71862
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2026-71862 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-71862 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
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CVE Translated by [email protected]
Oct. 14, 2026
Action Type Old Value New Value Added Translation Title: Checkmate de bluewave-labs, Description: Checkmate es una herramienta de código abierto y autoalojada diseñada para rastrear y monitorear el hardware del servidor, el tiempo de actividad, los tiempos de respuesta y los incidentes en tiempo real con hermosas visualizaciones. Desde la versión 3.3.0 hasta la 3.9.2, habilitar la configuración global 'showURL' provoca que el endpoint GET /api/v1/status-page/:url no autenticado devuelva objetos de monitor completos desde server/src/controllers/statusPageController.ts. La respuesta incluye el campo 'secret' utilizado por HttpProvider.ts como una credencial de autorización HTTP, a pesar de que BaseStatusPage.tsx no muestra ese valor, permitiendo a los visitantes extraer credenciales de la respuesta JSON y utilizarlas contra los servicios monitoreados. Este problema se corrige en la versión 3.9.2. -
CVE Modified by 134c704f-9b21-4f2e-91b3-4a467353bcc0
Aug. 21, 2026
Action Type Old Value New Value Added SSVC {'id': 'CVE-2026-71862', 'role': 'CISA Coordinator', 'options': [{'exploitation': 'none'}, {'automatable': 'yes'}, {'technicalImpact': 'partial'}], 'version': '2.0.3', 'timestamp': '2026-08-21T21:09:30.656386Z'} -
New CVE Received by [email protected]
Aug. 21, 2026
Action Type Old Value New Value Added Affected [{'vendor': 'bluewave-labs', 'product': 'Checkmate', 'versions': [{'status': 'affected', 'version': '>= 3.3.0, < 3.9.2'}]}] 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. Added CVSS V3.1 AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N Added CWE CWE-200 Added CWE CWE-522 Added Reference https://github.com/bluewave-labs/Checkmate/commit/cc1814f507041bb0f64845bed5d5442c21e920f2 Added Reference https://github.com/bluewave-labs/Checkmate/pull/3758 Added Reference https://github.com/bluewave-labs/Checkmate/releases/tag/v3.9.2 Added Reference https://github.com/bluewave-labs/Checkmate/security/advisories/GHSA-3m74-8cg9-rp8j