CVE-2026-5582 in FuseWP Plugin
Summary
by MITRE • 07/30/2026
The FuseWP plugin for WordPress is vulnerable to Cross-Site Request Forgery in all versions up to, and including, 1.1.24.2. This is due to missing nonce verification on the toggle_sync_status() function. This makes it possible for unauthenticated attackers to toggle the status of sync rules (enable/disable) via a forged request granted they can trick a site administrator into performing an action such as clicking on a link.
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Analysis
by VulDB Data Team • 07/30/2026
The FuseWP plugin for WordPress presents a critical cross-site request forgery vulnerability that affects all versions through 1.1.24.2, representing a significant security risk for WordPress installations. This vulnerability stems from the absence of proper nonce verification within the toggle_sync_status() function, which is designed to control the activation and deactivation of synchronization rules. The flaw fundamentally undermines the plugin's security model by allowing unauthorized parties to manipulate critical system configurations without proper authentication or authorization.
The technical nature of this vulnerability places it squarely within the范畴 of CWE-352, which specifically addresses cross-site request forgery conditions in web applications. Attackers can exploit this weakness by crafting malicious requests that target the toggle_sync_status() function, enabling them to change synchronization rule statuses from enabled to disabled or vice versa. This capability provides attackers with significant operational control over data synchronization processes, potentially disrupting critical business operations or creating opportunities for further exploitation. The vulnerability operates under the premise that an administrator must be tricked into performing an action such as clicking on a malicious link, which aligns with standard CSRF attack patterns described in the MITRE ATT&CK framework under technique T1566.
The operational impact of this vulnerability extends beyond simple configuration changes, as synchronization rules often govern critical data flows between WordPress systems and external services. When attackers can toggle these settings, they may inadvertently or deliberately disrupt automated data transfers, create data inconsistencies, or establish persistent access points within the target environment. The fact that no authentication is required for exploitation makes this particularly dangerous, as it requires minimal attacker privileges to cause significant disruption. This vulnerability essentially provides an attack surface that allows adversaries to manipulate core plugin functionality without requiring valid user credentials or elevated privileges.
Organizations using affected versions of FuseWP should implement immediate mitigations including updating to the latest available version where the nonce verification has been properly implemented. Security administrators should also consider implementing additional protective measures such as web application firewalls that can detect and block suspicious request patterns targeting known vulnerable endpoints. The vulnerability demonstrates the critical importance of proper input validation and authentication checks in WordPress plugins, particularly those handling administrative functions or system configuration changes. Regular security audits of plugin code should verify the presence of nonce verification mechanisms for all functions that modify system states, as this represents a fundamental security control that prevents unauthorized administrative actions through social engineering attacks.
The exploitation of this vulnerability highlights broader concerns about plugin security practices within the WordPress ecosystem, where many third-party components fail to implement proper CSRF protection mechanisms. This weakness creates opportunities for attackers to escalate privileges or gain persistent access to systems through manipulation of administrative functions. Organizations should also consider implementing additional monitoring and alerting for unusual configuration changes that might indicate successful exploitation attempts. The vulnerability serves as a reminder that even seemingly minor security controls like nonce verification can prevent significant damage when properly implemented, emphasizing the need for comprehensive security testing and code review processes in plugin development.