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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. 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 As a result, unpublished status pages and their associated internal data are accessible to any unauthenticated user via direct API requests.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.

PUBLISHED Reserved 2026-03-05 | Published 2026-03-07 | Updated 2026-03-07 | Assigner GitHub_M




MEDIUM: 5.3CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

Problem types

CWE-200: Exposure of Sensitive Information to an Unauthorized Actor

Product status

< 3.4.0
affected

References

github.com/...ckmate/security/advisories/GHSA-57xf-wg6w-fjrr

cve.org (CVE-2026-30829)

nvd.nist.gov (CVE-2026-30829)

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