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wid-sec-w-2026-0713  ·  Published 2026-03-12  ·  View on BSI CERT-Bund ↗

Uptime Kuma: Vulnerability allows Offenlegung from Informationen

CVSS 5.3 MEDIUM

Risk Summary

Uptime Kuma is an open source, self-hosted monitoring tool. From 2.0.0 to 2.1.3 , the GET /api/badge/:id/ping/:duration? endpoint in server/routers/api-router.js does not verify that the requested monitor belongs to a public group. All other badge endpoints check AND public = 1 in their SQL query before returning data. The ping endpoint skips this check entirely, allowing unauthenticated users to extract average ping/response time data for private monitors. This vulnerability is fixed in 2.2.0.

CVEs (1)

Affected Vendors

Open Source

Affected Products (2)

Open Source · Uptime Kuma <2.2.0
Open Source · Uptime Kuma 2.2.0

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