What’s Vulnerable › Vulnerabilities
CVE-2023-2020: Unauthorized scheduling of downtimes via REST API
- Severity: medium (CVSS 4.3 v3.1)
- Exploited in the wild: not listed in CISA KEV
- EPSS: 0.4% probability of exploitation in the next 30 days
- Public exploit or detection template: none known
- Published: 2023-04-18 · updated 2026-06-17
- Weakness: CWE-280
Description
Insufficient permission checks in the REST API in Tribe29 Checkmk <= 2.1.0p27 and <= 2.2.0b4 (beta) allow unauthorized users to schedule downtimes for any host.
Affected products
- Checkmk GmbH Checkmk: 2.1.0, 2.1.0-b1, 2.1.0-b2, 2.1.0-b3, 2.1.0-b4, 2.1.0-b5 (+35)
References
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