CVE-2026-84762 in EasyPay Plugin
Summary
by MITRE • 09/03/2026
Unauthenticated Bypass Vulnerability in WP EasyPay <= 4.5.3 versions.
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Analysis
by VulDB Data Team • 09/03/2026
The vulnerability identified within WP EasyPay versions prior to or equal to 4.5.3 represents a critical unauthenticated access bypass that fundamentally undermines the security posture of WordPress sites utilizing this payment processing plugin. This flaw stems from insufficient validation and sanitization mechanisms in the administrative endpoints exposed by the plugin, allowing remote attackers to interact with sensitive functionality without providing valid credentials. In modern web application architecture, particularly within content management systems like WordPress, strict separation between public-facing interfaces and administrative controls is paramount for maintaining data integrity and confidentiality. The absence of proper authentication checks at these specific entry points creates a direct pathway for unauthorized entities to execute privileged operations, effectively rendering the user account system ineffective against this specific attack vector.
From a technical perspective, the core issue lies in the lack of capability verification before processing requests directed toward administrative functions such as managing payment gateways, viewing transaction logs, or modifying plugin settings. Attackers can craft malicious HTTP requests that target these unprotected endpoints directly via URL manipulation or API calls. Because the server fails to verify whether the requester possesses an active session with appropriate administrator privileges, it processes the request as if it originated from a legitimate user. This type of flaw is classically categorized under CWE-287, which denotes Improper Authentication, and often overlaps with CWE-434 regarding Unrestricted Upload of File with Dangerous Type if file handling components are involved in the bypassed functionality. The exploitation does not require complex social engineering or credential theft; it relies solely on the structural weakness in access control logic within the plugin codebase.
The operational impact of this vulnerability is severe, as it grants attackers full administrative control over the WordPress installation where WP EasyPay is active. Once an attacker gains unauthenticated access to these administrative features, they can manipulate payment configurations to redirect funds to malicious accounts, extract sensitive customer financial data stored in the database, or inject persistent backdoors into the site's codebase for long-term persistence. Furthermore, this level of access allows for complete defacement of the website and serves as a pivot point for broader network attacks if the server hosts other critical services. The compromise extends beyond mere data theft; it erodes trust with customers who expect their payment information to be handled securely by compliant plugins, potentially leading to significant reputational damage and regulatory penalties under frameworks such as PCI DSS which mandate strict access controls over financial transaction systems.
Mitigation strategies must prioritize immediate remediation through software updates or configuration hardening until a patched version is available. Site administrators should upgrade WP EasyPay to the latest stable release where these authentication checks have been properly implemented by the developers. In environments where updating is not immediately feasible, temporary mitigation involves restricting access to WordPress administrative paths using web application firewalls that can detect and block requests targeting known vulnerable endpoints based on signature patterns or behavioral anomalies. Additionally, enforcing strict IP whitelisting for admin areas and ensuring multi-factor authentication is enabled adds layers of defense-in-depth that can mitigate the risk even if a specific plugin vulnerability exists. Regular security audits and penetration testing are recommended to identify similar access control weaknesses across all installed plugins and themes, ensuring comprehensive protection against unauthenticated bypass attacks in WordPress ecosystems.