CVE-2025-30993 is a security vulnerability classified under CWE-862 (Missing Authorization) affecting the VillaTheme Thank You Page Customizer for WooCommerce – Increase Your Sales plugin. This plugin is designed to customize the WooCommerce thank you page to potentially increase sales by enhancing customer engagement post-purchase. The vulnerability arises due to improperly configured access control mechanisms, allowing users with limited privileges (PR:L - Privileges Required: Low) to access or perform actions that should be restricted. Specifically, the CVSS vector indicates that the vulnerability can be exploited remotely over the network (AV:N) without requiring user interaction (UI:N), and it does not require high privileges but some level of authenticated access (PR:L). The impact of the vulnerability is high on confidentiality (C:H), but it does not affect integrity (I:N) or availability (A:N). This suggests that an attacker with low-level privileges could access sensitive information or data that should be protected, potentially exposing customer or transactional data. The affected versions include all versions up to 1.1.7, with no patch links currently available, indicating that a fix might not yet be released or publicly disclosed. There are no known exploits in the wild at the time of publication, but the medium severity score (6.5) reflects a significant risk if exploited. The vulnerability's root cause is the lack of proper authorization checks, which is a common security flaw where the system fails to verify whether a user has the right to perform a requested action or access certain data, leading to unauthorized data exposure or actions.

For European organizations using WooCommerce with the VillaTheme Thank You Page Customizer plugin, this vulnerability poses a risk of unauthorized data disclosure. Since the plugin customizes the post-purchase experience, it likely handles customer-related information such as order details, personal data, or promotional content. Exploitation could lead to exposure of sensitive customer information, violating GDPR requirements for data protection and potentially resulting in regulatory fines and reputational damage. The fact that exploitation requires only low-level privileges means that an attacker who gains limited access to the system (e.g., a low-privilege user or compromised account) could escalate their access to sensitive data without needing to compromise higher-level credentials. This could also facilitate further attacks or social engineering campaigns. The vulnerability does not impact system integrity or availability, so it is less likely to cause service disruption or data tampering, but confidentiality breaches alone are critical under European data protection laws. Organizations relying on this plugin for their e-commerce operations should consider the risk of customer trust erosion and legal consequences if the vulnerability is exploited.

1. Immediate mitigation should include restricting access to the affected plugin's functionality to only fully trusted and necessary users, minimizing the number of accounts with even low-level privileges that can interact with the plugin. 2. Monitor and audit user activities related to the thank you page customizer to detect any unusual access patterns or unauthorized data retrieval attempts. 3. If possible, temporarily disable or remove the VillaTheme Thank You Page Customizer plugin until a security patch is released. 4. Engage with VillaTheme or the plugin maintainers to obtain or request a security patch addressing the missing authorization checks. 5. Implement web application firewall (WAF) rules to detect and block suspicious requests targeting the thank you page customizer endpoints. 6. Review and harden WooCommerce and WordPress user role permissions to ensure least privilege principles are enforced, reducing the risk of privilege escalation. 7. Educate administrators and users about the risks of low-privilege account compromise and enforce strong authentication mechanisms such as MFA. 8. After patching, conduct thorough testing to verify that authorization checks are correctly enforced and that no sensitive data can be accessed without proper permissions.