CVE-2025-58650 is a medium severity vulnerability identified in the All In One SEO Pack plugin developed by Syed Balkhi. The vulnerability is classified under CWE-862, which corresponds to Missing Authorization. This means that the plugin improperly enforces access control, allowing users with limited privileges (low privilege or authenticated users) to perform actions or access resources they should not be authorized to. The CVSS 3.1 base score is 5.4, reflecting a network attack vector (AV:N), low attack complexity (AC:L), requiring privileges (PR:L), no user interaction (UI:N), unchanged scope (S:U), no confidentiality impact (C:N), low integrity impact (I:L), and low availability impact (A:L). The vulnerability affects all versions of the All In One SEO Pack plugin up to version 4.8.7, with no patch links currently available. The core issue is an incorrectly configured access control mechanism that could allow an attacker with some level of authenticated access to modify or disrupt SEO-related configurations or functionality, potentially leading to integrity and availability issues within affected WordPress sites. Although no known exploits are reported in the wild, the vulnerability presents a risk to websites relying on this plugin for SEO management, as unauthorized changes could degrade site performance, SEO rankings, or availability.

For European organizations, the impact of this vulnerability can be significant, especially for businesses and institutions that rely heavily on their online presence and search engine optimization to attract customers or disseminate information. Unauthorized modification of SEO settings could lead to degraded search engine rankings, loss of web traffic, and reputational damage. Additionally, the availability impact, while low, could result in temporary disruptions to website functionality or SEO-related features, affecting user experience and business operations. Organizations in sectors such as e-commerce, media, and public services that use WordPress with this plugin are particularly at risk. Since the vulnerability requires some level of authenticated access, insider threats or compromised user accounts could be leveraged to exploit this flaw. The lack of a patch increases the urgency for organizations to implement compensating controls to prevent exploitation.

Given the absence of an official patch, European organizations should take immediate practical steps to mitigate risk: 1) Restrict plugin access strictly to trusted administrators and limit the number of users with editing privileges to reduce the attack surface. 2) Implement strong authentication mechanisms such as multi-factor authentication (MFA) for all WordPress accounts with access to the plugin. 3) Monitor and audit user activities related to the All In One SEO Pack plugin to detect unauthorized changes promptly. 4) Consider temporarily disabling or uninstalling the plugin if SEO management can be deferred or handled by alternative means until a patch is released. 5) Employ web application firewalls (WAFs) with custom rules to detect and block suspicious requests targeting the plugin’s endpoints. 6) Keep WordPress core and other plugins updated to minimize the risk of chained exploits. 7) Regularly back up website data and configurations to enable quick restoration in case of compromise.