CVE-2025-7045 is a vulnerability identified in the Cloud SAML SSO plugin for WordPress, developed by cloudinfrastructureservices. The flaw arises from a missing authentication check on the delete_config action within the csso_handle_actions() function. This vulnerability affects all versions up to and including 1.0.19 of the plugin. Specifically, the plugin fails to verify whether the user initiating the delete_config action has the necessary permissions, allowing unauthenticated attackers to delete any configured Identity Provider (IdP). The deletion of an IdP disrupts the Single Sign-On (SSO) authentication flow, effectively causing a denial-of-service (DoS) condition for users relying on SAML-based authentication. The vulnerability is classified under CWE-306 (Missing Authentication for Critical Function), indicating that critical functions are accessible without proper authentication. The CVSS v3.1 base score is 6.5 (medium severity), with the vector indicating network attack vector (AV:N), low attack complexity (AC:L), no privileges required (PR:N), no user interaction (UI:N), unchanged scope (S:U), no confidentiality impact (C:N), low integrity impact (I:L), and low availability impact (A:L). Although the integrity and availability impacts are low, the ability for unauthenticated attackers to disrupt authentication mechanisms can have significant operational consequences. No known exploits are currently reported in the wild, and no patches have been linked yet. The vulnerability is particularly critical because SAML SSO is a widely used authentication method in enterprise environments, and WordPress is a popular content management system, often used as a front-end for corporate portals and services. Exploiting this vulnerability could lead to service interruptions and potentially force organizations to revert to less secure authentication methods temporarily.

For European organizations, the impact of CVE-2025-7045 can be substantial, especially for those relying on WordPress-based portals integrated with SAML SSO for employee or customer authentication. The deletion of configured IdPs by unauthenticated attackers would disrupt access to critical internal and external services, leading to operational downtime and potential loss of productivity. While the vulnerability does not directly expose sensitive data (no confidentiality impact), the denial-of-service effect on authentication can hinder business continuity and may indirectly affect compliance with regulations such as GDPR if access to personal data is blocked or if fallback mechanisms are insecure. Additionally, organizations in sectors with high reliance on secure authentication (e.g., finance, healthcare, government) may face increased risks of service disruption, reputational damage, and potential regulatory scrutiny. The ease of exploitation (no authentication or user interaction required) increases the likelihood of automated attacks, potentially impacting multiple organizations simultaneously. Given the widespread use of WordPress in Europe and the adoption of SAML SSO for federated identity management, this vulnerability could affect a broad range of enterprises, public sector entities, and service providers.

To mitigate CVE-2025-7045, European organizations should take the following specific actions: 1) Immediately audit all WordPress installations for the presence of the Cloud SAML SSO plugin and identify versions up to 1.0.19. 2) Disable or remove the vulnerable plugin if an update or patch is not yet available to prevent exploitation. 3) Implement Web Application Firewall (WAF) rules to block unauthorized requests targeting the delete_config action or suspicious POST requests to the plugin’s endpoints. 4) Restrict access to WordPress administrative interfaces by IP whitelisting or VPN-only access to reduce exposure to unauthenticated attackers. 5) Monitor logs for unusual or unauthorized attempts to modify SAML configurations, especially delete_config actions. 6) Prepare incident response plans to quickly restore IdP configurations if deletion occurs, including backups of SAML configuration data. 7) Engage with the plugin vendor or community to obtain patches or updates as soon as they become available and prioritize timely application of these patches. 8) Consider implementing multi-factor authentication (MFA) on WordPress admin accounts to add an additional layer of security, even though this vulnerability does not require authentication, it helps overall security posture. 9) Educate IT and security teams about this vulnerability to ensure rapid detection and response.