CVE-2025-67909 is an authorization bypass vulnerability identified in the WP Swings Membership For WooCommerce plugin, affecting all versions up to and including 3.0.3. The flaw arises from incorrectly configured access control security levels that allow an attacker to manipulate a user-controlled key parameter to bypass authorization checks. This vulnerability enables an attacker with low privileges (PR:L) to remotely exploit the system without requiring user interaction (UI:N). The attack vector is network-based (AV:N), meaning exploitation can occur over the internet or internal networks. The vulnerability impacts the confidentiality and integrity of membership data, potentially allowing unauthorized access to restricted membership content, user information, or administrative functions within the WooCommerce membership system. The plugin is widely used to manage paid memberships and subscriptions in WooCommerce-based e-commerce sites, making this vulnerability critical for businesses relying on membership gating. Although no public exploits have been reported yet, the high CVSS score of 8.1 reflects the severity and ease of exploitation. The vulnerability does not affect availability, but unauthorized access could lead to data leakage, privilege escalation, and business logic abuse. The issue was reserved and published in December 2025 by Patchstack, indicating a recent discovery and disclosure. No official patches or mitigation links are currently provided, emphasizing the need for immediate attention from affected users.

For European organizations, this vulnerability poses a significant risk to e-commerce platforms using WooCommerce with the Membership For WooCommerce plugin. Unauthorized access to membership content can lead to exposure of sensitive customer data, including personal and payment information, violating GDPR and other data protection regulations. This could result in legal penalties, reputational damage, and loss of customer trust. Additionally, attackers could manipulate membership statuses or gain unauthorized administrative privileges, disrupting business operations or enabling fraudulent transactions. The impact is especially critical for businesses relying heavily on subscription or membership revenue models. Given the network-based exploitability and lack of required user interaction, attackers can automate exploitation attempts, increasing the risk of widespread compromise. The absence of known exploits in the wild currently provides a window for proactive defense, but the high severity score underscores the urgency for mitigation. Organizations failing to address this vulnerability risk significant confidentiality and integrity breaches, with potential cascading effects on business continuity and compliance.

1. Monitor WP Swings and WooCommerce official channels closely for the release of security patches addressing CVE-2025-67909 and apply them immediately upon availability. 2. Until patches are available, implement strict access control policies at the web application firewall (WAF) or reverse proxy level to restrict access to membership management endpoints to trusted IP addresses or authenticated users only. 3. Conduct a thorough audit of membership-related access controls and user permissions within WooCommerce to ensure no excessive privileges are granted. 4. Employ anomaly detection tools to monitor for unusual access patterns or repeated attempts to manipulate user-controlled keys or parameters associated with membership functions. 5. Use input validation and parameter sanitization techniques in custom code or extensions interacting with the Membership For WooCommerce plugin to prevent unauthorized key manipulation. 6. Educate administrators and developers about the risks of authorization bypass vulnerabilities and encourage secure coding and configuration practices. 7. Regularly back up membership and e-commerce data to enable recovery in case of compromise. 8. Consider temporarily disabling the Membership For WooCommerce plugin if the business impact of potential exploitation outweighs the benefits until a patch is applied.