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VULNERABILITIES

CVE-2026-48549 Details

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.x Severity and Vector Strings:

CNA: [email protected]CVSS-B:6.5 MEDIUMVector:CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N

References to Advisories, Solutions, and Tools

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URLSource(s)Tag(s)
https://github.com/NagiosEnterprises/nagioscore/blob/master/Changelog [email protected]
https://www.nagios.com/security-disclosures/nagios-core/ [email protected]
https://www.vulncheck.com/advisories/nagios-core-xi-csrf-via-cmd-cgi-double-submit-cookie [email protected]

Weakness Enumeration

CWE-IDCWE NameSource
CWE-352Cross-Site Request Forgery (CSRF)[email protected]

Affected Products

No affected product data is available for this CVE.

Change History

2 change records found show changes

QUICK INFO

CVE Dictionary Entry:
CVE-2026-48549
NVD Published Date:
Aug 26, 2026
NVD Last Modified:
Sep 24, 2026
Source:
[email protected]
CVE-2026-48549 Details - Not Deferred