CVE-2025-30974 is a security vulnerability classified under CWE-862, which denotes Missing Authorization. This vulnerability affects the WordPress plugin 'Post Grid Master' developed by Akhtarujjaman Shuvo, specifically versions up to 3.4.13. The core issue arises from improperly configured access control mechanisms within the plugin, allowing users with limited privileges (requiring at least some level of authentication) to perform actions or access resources beyond their authorization scope. The vulnerability does not require user interaction and can be exploited remotely over the network (AV:N), with low attack complexity (AC:L). The CVSS 3.1 base score is 4.3, indicating a medium severity level. The impact primarily concerns integrity, as unauthorized users may manipulate or alter data or configurations within the plugin's scope without proper permissions. Confidentiality and availability are not directly affected. No known exploits are currently reported in the wild, and no patches have been published at the time of this analysis. The vulnerability's presence in a widely used WordPress plugin could potentially allow attackers to escalate privileges or modify content grids, which may lead to further exploitation if chained with other vulnerabilities or misconfigurations.

For European organizations, especially those relying on WordPress-based websites and using the Post Grid Master plugin, this vulnerability poses a moderate risk. Unauthorized modification of post grids or related content can undermine the integrity of published information, potentially damaging brand reputation and user trust. In sectors such as media, e-commerce, and public services, where content accuracy and integrity are critical, exploitation could lead to misinformation or unauthorized content display. While the vulnerability does not directly compromise confidentiality or availability, it could serve as a foothold for attackers to perform further attacks, including privilege escalation or injection of malicious content. Organizations with limited IT security resources or outdated plugin management practices are at higher risk. The absence of known exploits reduces immediate threat levels but does not eliminate the risk of future exploitation.

European organizations should promptly audit their WordPress installations to identify the presence of the Post Grid Master plugin and verify the version in use. Immediate steps include: 1) Upgrading the plugin to the latest version once a patch is released by the vendor; 2) In the interim, restrict access to the WordPress admin panel and plugin management interfaces to trusted IP addresses or VPNs; 3) Implement strict role-based access controls within WordPress to minimize privilege exposure; 4) Monitor logs for unusual activities related to post grid modifications; 5) Employ web application firewalls (WAFs) with custom rules to detect and block suspicious requests targeting the plugin endpoints; 6) Educate site administrators about the risks of unauthorized access and the importance of timely updates; 7) Consider disabling or replacing the plugin if a patch is not forthcoming and the risk is deemed unacceptable.