The Integrate Dynamics 365 CRM plugin for WordPress, developed by cyberlord92, suffers from a critical security weakness classified as CWE-306: Missing Authentication for Critical Function. This vulnerability affects all versions up to and including 1.0.9. The root cause is the lack of capability checks and nonce verification on functions hooked to the WordPress 'init' action, which is executed on every page load. This flaw allows unauthenticated attackers to send crafted HTTP requests directly to vulnerable plugin endpoints. Exploitation can lead to unauthorized deactivation of the plugin, tampering with OAuth configuration parameters, and triggering test connection routines that may expose sensitive information. The vulnerability has a CVSS 3.1 base score of 6.5, reflecting medium severity with network attack vector, no privileges required, no user interaction, and impacts on confidentiality and integrity but not availability. No patches or updates are currently listed, and no known exploits have been observed in the wild. The vulnerability's exploitation could compromise the security posture of WordPress sites integrating Dynamics 365 CRM, potentially exposing sensitive business data and disrupting CRM integration workflows. The absence of nonce verification and capability checks indicates a fundamental security design oversight in the plugin's request handling logic.

For European organizations, this vulnerability poses a risk to the confidentiality and integrity of CRM integration data. Attackers could manipulate OAuth configurations, potentially redirecting authentication flows or gaining unauthorized access to CRM resources. Deactivation of the plugin could disrupt business processes relying on Dynamics 365 CRM integration, impacting operational continuity. Sensitive data exposure through test connection endpoints could lead to information leakage, aiding further attacks or data breaches. Sectors such as finance, healthcare, retail, and manufacturing that rely on Dynamics 365 CRM integrated with WordPress for customer management and business operations are particularly at risk. The ease of exploitation without authentication increases the threat level, especially for publicly accessible WordPress sites. While availability is not directly impacted, the indirect effects of plugin deactivation and data tampering could cause significant business disruptions. The lack of known exploits in the wild suggests a window for proactive mitigation before widespread exploitation occurs.

1. Monitor the vendor's official channels for security patches or updates addressing CVE-2025-10746 and apply them promptly upon release. 2. Until patches are available, implement web application firewall (WAF) rules to block or challenge requests targeting the vulnerable plugin endpoints, especially those attempting to invoke functions hooked to 'init' with suspicious parameters. 3. Restrict access to the WordPress admin and plugin endpoints using IP whitelisting or VPN access controls to limit exposure to trusted users only. 4. Conduct regular audits of OAuth configurations and plugin settings to detect unauthorized changes. 5. Enable detailed logging and monitor for anomalous activities such as unexpected plugin deactivation or test connection triggers. 6. Consider temporarily disabling or removing the plugin if it is not critical to business operations until a secure version is available. 7. Educate site administrators about the risks of installing plugins without proper security reviews and encourage the use of security plugins that enforce capability checks and nonce verification. 8. Review and harden WordPress security settings, including enforcing least privilege principles for user roles and capabilities.