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      <title>CVE-2026-48549 — Nagios Core / XI CSRF via cmd.cgi Double-Submit Cookie</title>
      <link>https://vulnerability.circl.lu/vuln/cve-2026-48549</link>
      <description>&lt;p&gt;&lt;strong&gt;Affected:&lt;/strong&gt; Nagios Enterprises, LLC. Nagios Core, Nagios Enterprises, LLC. Nagios XI&lt;/p&gt;
&lt;p&gt;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.&lt;/p&gt;</description>
      <content:encoded>&lt;p&gt;&lt;strong&gt;Affected:&lt;/strong&gt; Nagios Enterprises, LLC. Nagios Core, Nagios Enterprises, LLC. Nagios XI&lt;/p&gt;
&lt;p&gt;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.&lt;/p&gt;</content:encoded>
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