CVE-2025-15285 is a vulnerability classified under CWE-862 (Missing Authorization) affecting the SEO Flow by LupsOnline plugin for WordPress, versions up to and including 2.2.1. The core issue lies in the plugin's authorization mechanism: the functions checkBlogAuthentication() and checkCategoryAuthentication() only perform basic API key authentication but omit WordPress capability checks that verify if a user has the rights to modify blog posts or categories. This missing authorization allows unauthenticated attackers to remotely invoke these functions and create, modify, or delete blog posts and categories without any user credentials or interaction. The vulnerability is remotely exploitable over the network (AV:N), requires no privileges (PR:N), and no user interaction (UI:N), with a scope limited to the plugin's data (S:U). The impact is high on integrity (I:H) but does not affect confidentiality or availability. No known exploits are currently reported in the wild, but the ease of exploitation and the critical nature of content integrity make this a significant threat. The lack of patch links suggests that a fix may not yet be publicly available, requiring interim mitigations. The vulnerability affects all versions of the plugin, indicating a widespread exposure for users who have not updated or applied custom fixes.

For European organizations, this vulnerability poses a substantial risk to the integrity of their WordPress-managed websites, especially those relying on the SEO Flow by LupsOnline plugin for content management and SEO optimization. Unauthorized modification or deletion of blog posts and categories can lead to misinformation, loss of critical content, and damage to brand reputation. Organizations in sectors such as media, e-commerce, and public services that depend heavily on web presence and content accuracy are particularly vulnerable. The absence of authentication requirements means attackers can exploit this remotely without needing valid credentials, increasing the likelihood of automated attacks or mass exploitation attempts. Additionally, manipulated content could be used to inject malicious links or misinformation, indirectly affecting user trust and potentially leading to regulatory scrutiny under European data and content governance laws. The impact on availability is minimal, but the integrity breach alone can have cascading effects on business operations and customer trust.

Immediate mitigation steps include disabling or uninstalling the SEO Flow by LupsOnline plugin until a security patch is released. Organizations should monitor their WordPress sites for unauthorized changes to posts and categories, using file integrity monitoring tools or WordPress audit logs. If disabling the plugin is not feasible, administrators should restrict access to the plugin’s API endpoints via web application firewalls (WAFs) or IP whitelisting to limit exposure. Implementing custom capability checks in the plugin code to enforce WordPress user permissions can serve as a temporary fix. Regular backups of website content should be maintained to enable quick restoration in case of unauthorized modifications. Organizations should subscribe to vendor advisories and CVE databases to apply official patches promptly once available. Additionally, reviewing and tightening API key management policies, including rotating keys and limiting their scope, can reduce risk. Conducting security awareness training for web administrators about plugin risks and monitoring is also recommended.