CVE-2025-8359 in AdForest Plugin
Summary
by MITRE • 09/06/2025
The AdForest theme for WordPress is vulnerable to Authentication Bypass in all versions up to, and including, 6.0.9. This is due to the plugin not properly verifying a user's identity prior to authenticating them. This makes it possible for unauthenticated attackers to log in as other users, including administrators, without access to a password.
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Analysis
by VulDB Data Team • 09/06/2025
The AdForest WordPress theme presents a critical authentication bypass vulnerability that affects all versions up to and including 6.0.9. This flaw resides in the theme's user authentication mechanism where proper identity verification procedures are completely absent or inadequately implemented. The vulnerability creates a fundamental security weakness that allows malicious actors to exploit the authentication flow without requiring legitimate credentials, effectively undermining the entire user access control system. The issue stems from the theme's failure to validate user credentials or session tokens before granting access privileges, creating an exploitable path that bypasses standard WordPress authentication protocols.
This authentication bypass vulnerability represents a severe deviation from established security practices and aligns with CWE-287, which addresses improper authentication issues in software systems. The flaw operates at the core authentication layer, where the theme fails to implement proper session management or credential validation checks that are standard requirements for web application security. Attackers can leverage this weakness to assume the identity of any user account within the system, including high-privilege administrator roles, without possessing the corresponding passwords or authentication tokens. The vulnerability essentially creates a backdoor that allows unauthorized access to the entire WordPress administrative interface and all associated user management capabilities.
The operational impact of this vulnerability extends far beyond simple unauthorized access, as it provides attackers with complete control over the affected WordPress installation. Once authenticated, malicious users can modify content, install malicious plugins, alter user permissions, and potentially escalate their privileges to gain full system control. This threat vector directly maps to ATT&CK technique T1078 which covers valid accounts usage and privilege escalation. The vulnerability affects not just individual user accounts but the entire security posture of the WordPress site, potentially enabling attackers to establish persistent access, exfiltrate sensitive data, or deploy malware throughout the affected system. The lack of proper authentication verification means that even if users attempt to log in through legitimate channels, the system remains vulnerable to exploitation.
Mitigation strategies for this vulnerability should prioritize immediate theme updates to versions that address the authentication bypass flaw. System administrators must implement comprehensive monitoring of login attempts and user activity to detect potential exploitation attempts. Additional security measures should include implementing strong access controls, regular security audits, and ensuring that all WordPress themes and plugins are maintained at current versions. The vulnerability highlights the importance of proper input validation and authentication flow implementation as outlined in OWASP Top Ten security requirements. Organizations should also consider implementing additional security layers such as two-factor authentication and web application firewalls to provide defense-in-depth against similar authentication bypass attacks that may target other components of the WordPress ecosystem.