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Advisories

Nagios Core / XI CSRF Protection Bypass via Double-Submit Cookie

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severity
medium
date
Affecting

  • Nagios Core < 4.5.14

  • Nagios XI < 2026R1.7

CWE
  • CWE-352 Cross-Site Request Forgery (CSRF)
CVSS
6.1
CVSS V4 Vector
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:N/SC:N/SI:H/SA:N
Credit
Zach Hanley of Horizon3.ai
Description
Nagios Core before 4.5.14 and Nagios XI before 2026R1.7 contain a cross-site request forgery protection bypass via a self-supplied double-submit cookie. An attacker can supply matching cookie and request parameter values to bypass CSRF protection, enabling unauthenticated attackers to run commands as authorized users via malicious links.

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