CVE-2026-90990
Livestatus injection via monitoring filter values
Description
Improper neutralization of newlines in filter values in the monitoring host and service list APIs in Checkmk <2.5.0p14 allows an authenticated user to inject additional Livestatus query headers, bypassing object visibility restrictions in count queries to infer information about hosts and services outside their contact groups and occupying web server and Livestatus workers for an attacker-controlled duration.
No summary for this CVE yet.
Weaknesses
Affected Products
Checkmk GmbH
commercial·DEaka checkmk
Exploitability
No known exploits, KEV entries, or remediation guidance available for this vulnerability yet.
References
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