CVE-2024-2907 in AGCA Plugin
Summary
by MITRE • 04/25/2024
The AGCA WordPress plugin before 7.2.2 does not sanitise and escape some of its settings, which could allow high privilege users such as admin to perform Stored Cross-Site Scripting attacks even when the unfiltered_html capability is disallowed (for example in multisite setup).
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Analysis
by VulDB Data Team • 05/14/2025
The vulnerability identified as CVE-2024-2907 affects the AGCA WordPress plugin version 7.2.1 and earlier, presenting a critical security risk through stored cross-site scripting flaws. This issue specifically targets high-privilege users including administrators who possess the capability to manipulate plugin settings. The vulnerability stems from inadequate sanitization and escaping of user-controllable input within the plugin's administrative interfaces, creating an environment where malicious scripts can be persistently injected and executed. The flaw is particularly concerning in multisite WordPress environments where the unfiltered_html capability is typically restricted to prevent unauthorized script execution, yet this vulnerability allows bypassing such protections.
The technical implementation of this vulnerability resides in the plugin's failure to properly validate and sanitize data entered through its administrative settings forms. When administrators configure plugin parameters, the system does not adequately process or escape potentially malicious input before storing it in the database. This stored data is subsequently rendered in administrative interfaces without proper output escaping, creating conditions for persistent XSS attacks. The vulnerability manifests when an attacker with administrative privileges inputs malicious JavaScript code into plugin settings, which then executes whenever other administrators view the affected pages. This represents a classic stored XSS vector where the malicious payload is stored server-side and delivered to users during routine administrative tasks.
The operational impact of this vulnerability extends beyond simple script execution, as it enables attackers to escalate privileges, steal administrative sessions, and potentially compromise entire WordPress installations. In multisite configurations where unfiltered_html is typically restricted, the vulnerability undermines the security model by allowing authenticated attackers to execute arbitrary code with elevated privileges. Attackers could leverage this to establish persistent backdoors, modify plugin functionality, access sensitive data, or redirect users to malicious sites. The vulnerability's exploitation requires only administrative access, making it particularly dangerous as it can be leveraged by insiders or compromised administrator accounts. The stored nature of the vulnerability means that the malicious payload remains active until manually removed from the plugin settings, providing attackers with sustained access.
Mitigation strategies for this vulnerability include immediate upgrade to AGCA plugin version 7.2.2 or later, which contains proper sanitization and escaping mechanisms. Administrators should also implement additional security measures such as restricting administrative access to trusted personnel only, implementing multi-factor authentication, and monitoring administrative activities for suspicious behavior. The vulnerability aligns with CWE-79 which specifically addresses cross-site scripting flaws, and maps to ATT&CK technique T1059.007 for command and scripting interpreter usage. Organizations should also consider implementing content security policies to further reduce the impact of potential XSS attacks, and conduct regular security audits of installed plugins to identify similar vulnerabilities. Regular security updates and patch management processes become critical in preventing exploitation of such flaws that can be leveraged for privilege escalation and persistent access within WordPress environments.