CVE-2025-66079 identifies a missing authorization vulnerability in the Gutenverse Form plugin developed by Jegstudio, affecting all versions up to 2.2.0. This vulnerability arises from incorrectly configured access control security levels within the plugin, which fails to properly enforce authorization checks on certain functionalities. As a result, remote attackers can exploit this flaw without any authentication or user interaction, directly over the network, to gain unauthorized access or perform unauthorized actions on the form data or administrative functions. The vulnerability impacts confidentiality, integrity, and availability, as attackers may read sensitive data, alter form submissions, or disrupt form operations. The CVSS v3.1 base score of 7.3 reflects a high severity level, with an attack vector of network (AV:N), low attack complexity (AC:L), no privileges required (PR:N), no user interaction (UI:N), and an unchanged scope (S:U). Although no public exploits are currently known, the straightforward exploitation path and the critical nature of form data in web applications make this a significant threat. The Gutenverse Form plugin is commonly used in WordPress environments to create and manage forms, which are often integral to business processes such as customer inquiries, registrations, and data collection. The lack of authorization checks could allow attackers to bypass intended restrictions, potentially leading to data leakage, unauthorized data manipulation, or denial of service. The vulnerability was published on November 21, 2025, and no patches or fixes have been linked yet, emphasizing the need for vigilance and interim protective measures.

For European organizations, the impact of CVE-2025-66079 can be substantial, especially for those relying on Gutenverse Form for critical web forms handling sensitive or business-critical data. Unauthorized access could lead to leakage of personal data, violating GDPR and other data protection regulations, resulting in legal and financial penalties. Integrity breaches could allow attackers to manipulate form submissions, potentially disrupting business operations or enabling fraud. Availability impacts could cause denial of service on form functionalities, affecting customer interactions and service delivery. Organizations in sectors such as e-commerce, healthcare, finance, and government, which frequently use web forms for data collection and user interactions, are particularly vulnerable. The ease of exploitation without authentication increases the risk of automated attacks and mass exploitation attempts. Additionally, reputational damage from data breaches or service disruptions could have long-term consequences. The lack of known exploits currently provides a window for mitigation, but the high severity score and network accessibility necessitate urgent attention.

1. Monitor official Jegstudio channels and security advisories for patches addressing CVE-2025-66079 and apply them immediately upon release. 2. Until a patch is available, restrict access to the Gutenverse Form plugin’s administrative and sensitive endpoints using network-level controls such as IP whitelisting or VPN access. 3. Deploy and configure Web Application Firewalls (WAFs) to detect and block unauthorized access attempts targeting the plugin’s vulnerable functionalities. 4. Conduct a thorough review of access control configurations within the plugin and the hosting environment to ensure least privilege principles are enforced. 5. Implement logging and continuous monitoring of form-related activities to detect anomalous or unauthorized actions promptly. 6. Educate web administrators and developers about the vulnerability to avoid misconfigurations and to prepare for rapid response. 7. Consider temporary disabling of the Gutenverse Form plugin if it is not critical or if compensating controls cannot be implemented swiftly. 8. Regularly back up form data and website configurations to enable quick recovery in case of compromise. 9. Evaluate alternative form plugins with stronger security postures if the risk exposure is unacceptable.