CVE-2026-25036 identifies a missing authorization vulnerability in the WP Chill Passster plugin, a WordPress content protection tool used to restrict access to certain content. The vulnerability arises from incorrectly configured access control security levels, which means that the plugin fails to properly verify whether a user is authorized to access protected content or perform certain actions. This flaw affects all versions up to and including 4.2.25. Because the plugin is designed to protect content, the missing authorization can allow attackers to bypass these protections, potentially gaining unauthorized access to sensitive or restricted information. The vulnerability does not require user interaction or authentication, making it easier to exploit if an attacker can reach the vulnerable endpoint. Although no known exploits are currently reported in the wild, the flaw's nature suggests that exploitation could be straightforward for attackers familiar with WordPress plugin structures. The lack of a CVSS score indicates that the vulnerability is newly published and not yet fully assessed, but the impact on confidentiality and integrity is significant. The vulnerability is particularly relevant for organizations using Passster to protect proprietary content, membership sites, or paywalled information. Since WordPress is widely used across Europe, and Passster is a popular plugin for content protection, this vulnerability poses a notable risk to European organizations relying on these technologies.

For European organizations, exploitation of this vulnerability could lead to unauthorized disclosure of sensitive or proprietary content, undermining confidentiality. This could affect businesses that rely on Passster to protect premium content, membership-only resources, or internal documents. Integrity risks arise if attackers manipulate or alter protected content or settings due to unauthorized access. The availability impact is limited but could occur if attackers disrupt content protection mechanisms. The breach of access controls could damage organizational reputation and lead to regulatory compliance issues, especially under GDPR, if personal or sensitive data is exposed. Organizations in sectors such as media, education, e-commerce, and membership services are particularly vulnerable. The ease of exploitation without authentication increases risk, and the widespread use of WordPress in Europe amplifies potential exposure. Without immediate mitigation, attackers could leverage this vulnerability to gain unauthorized access, leading to data leaks or unauthorized content distribution.

Organizations should monitor WP Chill announcements for an official patch addressing CVE-2026-25036 and apply updates promptly once available. Until patched, administrators should review and tighten access control configurations within Passster, ensuring that only authorized roles have access to protected content. Implement additional WordPress-level access restrictions using other security plugins or custom code to enforce authorization checks. Conduct thorough audits of content protection settings and logs to detect any unauthorized access attempts. Employ web application firewalls (WAFs) with rules targeting suspicious access patterns related to Passster endpoints. Educate site administrators on the risks of missing authorization vulnerabilities and the importance of timely updates. For critical content, consider temporary alternative protection methods outside of Passster until the vulnerability is resolved. Regularly back up website data to enable recovery in case of compromise. Finally, integrate vulnerability scanning tools that include checks for this specific issue to maintain ongoing security posture.