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

CVSS 7.5 · High

Possible ATT&CK Techniques 1AI

T1530 · Data from Cloud Storage

Affected Version Matrix 1

VendorProductVersion RangeStatus
bluewave-labsCheckmate>= 3.3.0, < 3.9.2affected
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I. Basic Information for CVE-2026-71862

Vulnerability Information
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Vulnerability Title
Checkmate: Sensitive Bearer Token Exposure via Public Status Pages When showURL Setting is Enabled
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
信息暴露
Source: CVE Program / CVE List V5

Affected Products

VendorProductAffected VersionsCPESubscribe
bluewave-labsCheckmate >= 3.3.0, < 3.9.2 -

II. Public POCs for CVE-2026-71862

#POC DescriptionSource LinkShenlong Link
AI-Generated POCPremium
Qwen3.6-35B-A3B · 7991 chars
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III. Intelligence Information for CVE-2026-71862

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Patches & Fixes for CVE-2026-71862 (2)

Vendor Advisories for CVE-2026-71862 (1)

Other References for CVE-2026-71862 (1)

Same Patch Batch · bluewave-labs · 2026-08-21 · 3 CVEs total

CVE-2026-552417.5 HIGHCheckmate: Pre-auth Denial of Service via File Upload on Registration
CVE-2026-706564.9 MEDIUMCheckmate: Regular Expression Denial of Service (ReDoS) via User-Controlled Regex in Monit

IV. Related Vulnerabilities

Same product: Checkmate
Same vendor: bluewave-labs
Same weakness: CWE-200

V. Comments for CVE-2026-71862

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