CVE-2026-71862 Checkmate: Sensitive Bearer Token Exposure via Public Status Pages When showURL Setting is Enabled

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 endpoi...

CVE-2026-71862

Checkmate (open-source self-hosted monitoring tool) versions 3.3.0 through 3.9.2 are vulnerable to sensitive credential exposure . When the global showURL setting is enabled, the unauthenticated endpoint GET /api/v1/status-page/:url returns complete monitor objects from statusPageController.ts, i...

CVE-2026-71862 Checkmate: Sensitive Bearer Token Exposure via Public Status Pages When showURL Setting is Enabled

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 endpoi...

EUVD-2026-64039

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 endpoi...

CVE-2026-70656 Checkmate: Regular Expression Denial of Service (ReDoS) via User-Controlled Regex in Monitor Advanced Matching

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 3.5.1 until 3.9.2, an authenticated admin or superadmin can set matchMethod to regex and place a malicious expression...

EUVD-2026-64038

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 3.5.1 until 3.9.2, an authenticated admin or superadmin can set matchMethod to regex and place a malicious expression...

CVE-2026-70656 Checkmate: Regular Expression Denial of Service (ReDoS) via User-Controlled Regex in Monitor Advanced Matching

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 3.5.1 until 3.9.2, an authenticated admin or superadmin can set matchMethod to regex and place a malicious expression...

CVE-2026-70656 Checkmate: Regular Expression Denial of Service (ReDoS) via User-Controlled Regex in Monitor Advanced Matching

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 3.5.1 until 3.9.2, an authenticated admin or superadmin can set matchMethod to regex and place a malicious expression...

CVE-2026-70656

Checkmate (open-source self-hosted server monitoring tool) versions 3.5.1 through 3.9.2 are vulnerable to ReDoS (Regular Expression Denial of Service). An authenticated admin or superadmin can set matchMethod to regex and inject a malicious expression into the expectedValue field for advanced HTT...

CVE-2026-55241 Checkmate: Pre-auth Denial of Service via File Upload on Registration

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. Prior to 3.9.1, the public POST /api/v1/auth/register route in server/src/api/routes/authRoutes.ts passes multipart...

CVE-2026-55241

Checkmate , an open-source self-hosted server monitoring tool, is vulnerable to a pre-authentication denial of service in versions prior to 3.9.1 . The public POST /api/v1/auth/register endpoint processes multipart profileImage uploads through in-memory Multer parsing before registration or invit...

CVE-2026-55241 Checkmate: Pre-auth Denial of Service via File Upload on Registration

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. Prior to 3.9.1, the public POST /api/v1/auth/register route in server/src/api/routes/authRoutes.ts passes multipart...

EUVD-2026-64037

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. Prior to 3.9.1, the public POST /api/v1/auth/register route in server/src/api/routes/authRoutes.ts passes multipart...

CVE-2026-55241 Checkmate: Pre-auth Denial of Service via File Upload on Registration

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. Prior to 3.9.1, the public POST /api/v1/auth/register route in server/src/api/routes/authRoutes.ts passes multipart...

CVE-2026-70656: Inefficient Regular Expression Complexity

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 3.5.1 until 3.9.2, an authenticated admin or superadmin can set matchMethod to regex and place a malicious expression...

PT-2026-79420

Name of the Vulnerable Software and Affected Versions Checkmate versions prior to 3.9.1 Description An unauthenticated attacker can cause a denial of service by submitting concurrent oversized files to the 'POST /api/v1/auth/register' endpoint. The application uses in-memory Multer parsing for th...

PT-2026-79425

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 endpoi...

CVE-2026-71862: Exposure of Sensitive Information to an Unauthorized Actor

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 endpoi...

CVE-2026-55241: Uncontrolled Resource Consumption

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. Prior to 3.9.1, the public POST /api/v1/auth/register route in server/src/api/routes/authRoutes.ts passes multipart...

PT-2026-79423

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 3.5.1 until 3.9.2, an authenticated admin or superadmin can set matchMethod to regex and place a malicious expression...