Vulnerability 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.
CVSS Score
MEDIUM
Related Weaknesses (CWE)
References
- https://github.com/NagiosEnterprises/nagioscore/blob/master/Changelog
- https://www.nagios.com/security-disclosures/nagios-core/
- https://www.vulncheck.com/advisories/nagios-core-xi-csrf-via-cmd-cgi-double-subm
FAQ
What is CVE-2026-48549?
CVE-2026-48549 is a vulnerability with a CVSS score of 6.5 (MEDIUM). 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 mat...
How severe is CVE-2026-48549?
CVE-2026-48549 has been rated MEDIUM with a CVSS base score of 6.5/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-48549?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.