Improper Permission Enforcements in Checkmk by Tribe29

CVE-2026-2859

What is CVE-2026-2859?

Improper permission enforcement in various versions of Checkmk allows unauthenticated users to exploit vulnerabilities in the deploy_agent endpoint. This puts sensitive information at risk, as attackers can enumerate existing hosts simply by monitoring different HTTP response codes. This flaw raises significant concerns for system integrity and data privacy, particularly in environments where security is paramount.

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References