medium6.5
CVE-2026-48549
Nagios Core before 4.5.13 and Nagios XI before 2026R1.5 contains a CSRF vulnerability in cmd.cgi.
Impact
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 products
| Vendor | Product | Affected versions |
|---|---|---|
| Nagios | Nagios Core | before 4.5.13 |
Versions were read from the advisory text. No structured product data has been published for this record yet.