CVE-2026-48549
6.9
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N
Summary
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.
Affected Software
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| Nagios Enterprises, LLC. | Nagios Core | 0 < 4.5.13 | affected |
| Nagios Enterprises, LLC. | Nagios XI | 0 < 2026R1.5 | affected |
Weaknesses
- CWE-352: Cross-Site Request Forgery (CSRF)
References
- https://www.nagios.com/security-disclosures/nagios-core/
- https://github.com/NagiosEnterprises/nagioscore/blob/master/Changelog
- https://www.vulncheck.com/advisories/nagios-core-xi-csrf-via-cmd-cgi-double-submit-cookie
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