Nagios XI versions prior to 2024R1.1.3 did not invalidate...
        
  Critical severity
        
          Unreviewed
      
        Published
          Oct 31, 2025 
          to the GitHub Advisory Database
          •
          Updated Oct 31, 2025 
      
  
Description
        Published by the National Vulnerability Database
      Oct 30, 2025 
    
  
        Published to the GitHub Advisory Database
      Oct 31, 2025 
    
  
        Last updated
      Oct 31, 2025 
    
  
Nagios XI versions prior to 2024R1.1.3 did not invalidate all other active sessions for a user when that user's password was changed. As a result, any pre-existing sessions (including those potentially controlled by an attacker) remained valid after a credential update. This insufficient session expiration could allow continued unauthorized access to user data and actions even after a password change.
References