CVE-2026-48549

MediumCVSS 6.5/10Last modified Sep 24, 2026

Description

Nagios Core before 4.5.13 and Nagios XI before 2026R1.5 contains a CSRF vulnerability in cmd.cgi. When no Cookie header is present, the double-submit cookie protection can be bypassed by supplying matching NagFormId and nagFormId values in the POST body, allowing a cross-site request to execute Nagios commands as a currently authenticated user.

Metrics

CVSS 3.1 6.5/10CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N

Weakness enumeration

CWE-352

Affected software

Source: the vendor's advisory (CNA). NVD analysis pending.

Vendor	Product	Versions
Nagios Enterprises, LLC.	Nagios Core	< 4.5.13
Nagios Enterprises, LLC.	Nagios XI	< 2026R1.5

References

Timeline

Published: Aug 26, 2026
Last modified: Sep 24, 2026
NVD status: Awaiting Analysis

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