CVE-2026-30829CWE-200

Checkmate: Unauthenticated Access to Unpublished Status Page

Medium · published March 7, 2026

CVSS v3.1
5.3
EPSS
0%
Percentile
35.5
In the wild
Unconfirmed
What it is

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 version 3.4.0, an unauthenticated information disclosure vulnerability exists in the GET /api/v1/status-page/:url endpoint. The endpoint does not enforce authentication or verify whether a status page is published before returning full status page details. As a result, unpublished status pages and their associated internal data are accessible to any unauthenticated user via direct API requests. This issue has been patched in version 3.4.0.

The record
Technical detail
CVSS v3.1
5.3 · MEDIUM
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
CVSS v4.0
Not supplied
EPSS
0.00422 · 35.5th percentile
Weakness
CWE-200 · Exposure of Sensitive Information to an Unauthorized Actor
Published
2026-03-07T05:46Z
EPSS history
Timeline
  • 07 MAR 05:46Z
    Checkmate: Unauthenticated Access to Unpublished Status Page
    cvelistv5