CVE-2026-25375 identifies a missing authorization vulnerability in the WP Chill Image Photo Gallery Final Tiles Grid WordPress plugin, specifically versions up to and including 3.6.10. The vulnerability arises from incorrectly configured access control security levels within the plugin, which fail to properly verify whether a user has the necessary permissions to perform certain actions or access specific resources. This missing authorization can allow an attacker, potentially even an unauthenticated user, to bypass security restrictions and execute unauthorized operations such as viewing, modifying, or deleting gallery images or metadata. The plugin is commonly used to create tiled photo galleries on WordPress websites, and a flaw in its access control can compromise the confidentiality and integrity of the media content and possibly other site data. Although no public exploits are currently known, the vulnerability's presence in a widely used plugin makes it a significant risk. The lack of a CVSS score indicates that the vulnerability has not yet been fully assessed, but the nature of missing authorization typically represents a high risk. The vulnerability was published in February 2026, with no patches currently linked, suggesting that users must remain vigilant for updates or apply manual mitigations. The vulnerability affects all versions up to 3.6.10, and no specific affected versions prior to that are detailed. The issue is assigned by Patchstack and is recognized as a security flaw that requires prompt attention to prevent unauthorized access.

For European organizations, the impact of CVE-2026-25375 can be significant, especially for those relying on WordPress websites with the vulnerable plugin installed. Unauthorized access to image galleries could lead to data leakage, defacement, or unauthorized content manipulation, damaging brand reputation and user trust. In cases where galleries contain sensitive or proprietary images, confidentiality breaches could have legal and compliance ramifications under regulations like GDPR. Additionally, attackers exploiting this vulnerability could use it as a foothold to escalate privileges or conduct further attacks within the web environment. The availability of the site could also be indirectly affected if attackers modify or delete gallery content, leading to service disruption. Since WordPress powers a large portion of European websites, and this plugin is popular for image display, the scope of affected systems is broad. The ease of exploitation is potentially high if no authentication is required, increasing the risk profile. Overall, the vulnerability could lead to unauthorized data access and integrity violations, with moderate to high operational impact depending on the organization's reliance on the affected plugin.

European organizations should immediately inventory their WordPress installations to identify the presence of the WP Chill Image Photo Gallery Final Tiles Grid plugin and verify its version. Until an official patch is released, organizations should consider disabling or uninstalling the plugin to eliminate the risk. If disabling is not feasible, restrict access to the affected plugin's functionality by implementing strict web application firewall (WAF) rules that block unauthorized requests targeting the plugin endpoints. Conduct thorough access control reviews and ensure that only authenticated and authorized users can interact with gallery management features. Monitor web server and application logs for unusual or unauthorized access attempts related to the plugin. Additionally, maintain regular backups of website content to enable recovery in case of data tampering. Stay informed about vendor updates and apply patches promptly once available. For organizations with development resources, consider applying temporary custom authorization checks or code fixes to enforce proper access control until an official patch is provided.