Medium severity6.5NVD Advisory· Published Aug 26, 2026

CVE-2026-48548

Description

Nagios Core before 4.5.12 contains a cross-site request forgery vulnerability in cmd.cgi where the CSRF protection mechanism passes validation when the NagFormId cookie is absent. Attackers can craft a malicious cross-site POST request to execute arbitrary Nagios commands as a currently authenticated user without their knowledge or consent.

Affected products

Nagios/nagioscorellm-create
Range: <4.5.12

Patches

Vulnerability mechanics

References

github.com/NagiosEnterprises/nagioscore/blob/master/Changelognvd
www.nagios.com/security-disclosures/nagios-core/nvd
www.vulncheck.com/advisories/nagios-core-csrf-via-cmd-cginvd

News mentions

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