CVE-2026-25423 identifies a missing authorization vulnerability in the Real 3D FlipBook WordPress plugin developed by creativeinteractivemedia, specifically affecting versions up to and including 4.16.4. This vulnerability stems from improperly configured access control mechanisms within the plugin, which fail to enforce correct authorization checks on certain actions or resources. As a result, unauthorized users—potentially unauthenticated or with limited privileges—may exploit this flaw to perform operations that should be restricted, such as modifying flipbook content, accessing sensitive data, or altering plugin settings. The vulnerability does not currently have a CVSS score and no public exploits have been reported, but the nature of missing authorization issues typically allows attackers to bypass intended security controls. The plugin is widely used to embed interactive 3D flipbooks in WordPress sites, making it a valuable target for attackers aiming to compromise website integrity or exfiltrate data. The lack of patches or official fixes at the time of publication necessitates immediate attention to access control policies and monitoring. This vulnerability highlights the importance of rigorous authorization checks in web application plugins, especially those that handle user-generated content or administrative functions.

For European organizations, exploitation of this vulnerability could lead to unauthorized modification or disclosure of content managed by the Real 3D FlipBook plugin, potentially damaging brand reputation and violating data protection regulations such as GDPR. Attackers might manipulate flipbook content to inject malicious code, deface websites, or steal sensitive information embedded within flipbooks. This could also serve as a foothold for further attacks within the network. Organizations relying on this plugin for marketing, documentation, or customer engagement risk operational disruption and loss of user trust. The impact is heightened in sectors with strict compliance requirements or where website integrity is critical, such as finance, healthcare, and government. Additionally, the absence of authentication requirements for exploitation increases the attack surface, making it easier for remote attackers to target vulnerable sites across Europe.

Organizations should immediately audit their WordPress installations to identify the presence and version of the Real 3D FlipBook plugin. Until an official patch is released, restrict plugin access to trusted administrators only and disable any unnecessary features that could be exploited. Implement web application firewall (WAF) rules to detect and block suspicious requests targeting the plugin endpoints. Regularly monitor logs for unauthorized access attempts or unusual activity related to the plugin. Consider isolating or sandboxing the plugin environment to limit potential damage. Engage with the plugin vendor or community to obtain updates or security advisories. Additionally, review and harden WordPress user roles and permissions to minimize privilege escalation risks. Finally, prepare an incident response plan specific to web application compromise scenarios involving plugins.