CVE-2025-66058 is a Missing Authorization vulnerability classified under CWE-862 affecting the PickPlugins Post Grid and Gutenberg Blocks WordPress plugins up to version 2.3.17. This vulnerability arises from incorrectly configured access control mechanisms that fail to properly verify whether a user has the necessary permissions to perform certain actions or access specific resources within the plugin. Exploitation requires an attacker to have some level of privileges (PR:L in CVSS), but no user interaction is needed, and the attack can be conducted remotely (AV:N). The vulnerability primarily impacts confidentiality, allowing unauthorized users to access potentially sensitive data or content managed by these plugins without proper authorization. The integrity and availability of the system are not directly affected. Although no known exploits have been reported in the wild, the vulnerability poses a risk especially in environments where multiple users have varying privilege levels. The lack of patches currently available means organizations must rely on configuration reviews and access restrictions until official fixes are released. The vulnerability was published on December 18, 2025, with a CVSS v3.1 base score of 6.5, indicating a medium severity level. The issue is significant for WordPress sites using these plugins, which are popular for content display and management via Gutenberg blocks. Attackers exploiting this flaw could gain unauthorized access to content grids or post data, potentially leading to data leakage or privacy violations. The vulnerability highlights the importance of robust authorization checks in plugin development and deployment.

For European organizations, the primary impact of CVE-2025-66058 is unauthorized access to sensitive content or data managed by the PickPlugins Post Grid and Gutenberg Blocks plugins. This could lead to confidentiality breaches, exposing internal or customer information, which may violate data protection regulations such as GDPR. Although the vulnerability does not affect data integrity or system availability, unauthorized data exposure can damage organizational reputation and result in compliance penalties. Organizations with multi-user WordPress environments, especially those allowing contributors or editors limited privileges, are at higher risk since attackers need some level of access to exploit the flaw. The lack of known exploits in the wild reduces immediate risk but does not eliminate the threat, as attackers may develop exploits once the vulnerability becomes widely known. The impact is more pronounced for sectors handling sensitive or regulated data, such as finance, healthcare, and government agencies. Additionally, the vulnerability could be leveraged as part of a broader attack chain to gather intelligence or escalate privileges if combined with other vulnerabilities.

1. Monitor PickPlugins official channels for patches addressing CVE-2025-66058 and apply them promptly once available. 2. Conduct a thorough audit of user roles and permissions within WordPress, ensuring that only trusted users have access to functionalities provided by Post Grid and Gutenberg Blocks plugins. 3. Temporarily disable or restrict the use of these plugins in environments where sensitive data is displayed or managed until a patch is applied. 4. Implement strict access control policies at the WordPress level, including the use of security plugins that enforce granular permission checks. 5. Regularly review plugin configurations to ensure no unintended access paths exist. 6. Employ web application firewalls (WAFs) with custom rules to detect and block suspicious requests targeting these plugins. 7. Monitor logs for unusual access patterns or attempts to exploit authorization weaknesses. 8. Educate site administrators and content managers about the risks of privilege misuse and the importance of least privilege principles. 9. Consider isolating critical content or data from plugin-managed areas if feasible. 10. Maintain up-to-date backups to recover quickly in case of any compromise.