CVE-2025-57977 in Flexible PDF Invoices for WooCommerce & WordPress Plugin
Summary
by MITRE • 09/22/2025
Cross-Site Request Forgery (CSRF) vulnerability in wpdesk Flexible PDF Invoices for WooCommerce & WordPress allows Cross Site Request Forgery. This issue affects Flexible PDF Invoices for WooCommerce & WordPress: from n/a through 6.0.13.
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Analysis
by VulDB Data Team • 09/22/2025
This cross-site request forgery vulnerability exists within the wpdesk Flexible PDF Invoices for WooCommerce & WordPress plugin, representing a critical security flaw that undermines the integrity of web applications. The vulnerability stems from insufficient validation of requests originating from unauthorized domains, allowing malicious actors to exploit the plugin's functionality through crafted requests. The affected version range spans from an unspecified starting point through version 6.0.13, indicating a prolonged period during which users were exposed to this risk without adequate protection mechanisms.
The technical implementation of this CSRF flaw involves the absence of proper anti-forgery tokens or origin validation within the plugin's administrative interfaces. When legitimate users interact with the plugin's administrative functions, the system fails to verify that requests originate from the intended domain, enabling attackers to construct malicious requests that appear to come from authenticated users. This vulnerability operates at the application layer and can be exploited through various attack vectors including social engineering campaigns or by leveraging existing user sessions. The flaw specifically targets the plugin's administrative functionality, making it particularly dangerous as it could allow unauthorized modifications to invoice settings, generation parameters, or potentially even lead to data manipulation within the WordPress ecosystem.
The operational impact of this vulnerability extends beyond simple data integrity concerns, as it can potentially enable attackers to execute unauthorized administrative actions within the WordPress environment. An attacker could leverage this vulnerability to modify invoice templates, alter customer data, or potentially gain deeper access to the WordPress administrative panel. The vulnerability's presence in a widely used plugin like Flexible PDF Invoices for WooCommerce means that numerous websites could be compromised simultaneously, affecting both business operations and customer data security. The risk is compounded by the fact that many WordPress installations may not have robust monitoring in place to detect unauthorized administrative actions, making the exploitation of this vulnerability particularly insidious.
Mitigation strategies should prioritize immediate plugin updates to versions beyond 6.0.13 where the CSRF protection mechanisms have been implemented. Organizations should also implement additional security measures including the deployment of web application firewalls to monitor and filter suspicious requests, and the implementation of proper session management controls. The vulnerability aligns with CWE-352, which specifically addresses cross-site request forgery in software applications, and corresponds to ATT&CK technique T1566.001, which covers the exploitation of web application vulnerabilities through CSRF attacks. Network administrators should also consider implementing role-based access controls and regular security audits to detect any unauthorized modifications that may have occurred due to this vulnerability. The affected plugin developers should ensure that all future releases incorporate robust CSRF protection mechanisms and undergo thorough security testing before deployment to prevent similar vulnerabilities from emerging in subsequent versions.