The vulnerability identified as CVE-2025-12015 affects the WordPress plugin 'Convert WebP & AVIF | Quicq', which is designed to optimize images and improve Google PageSpeed scores. The issue stems from a missing authorization (CWE-862) on the AJAX endpoint 'wp_ajax_wpqai_disconnect_quicq_afosto'. This endpoint can be invoked by authenticated users with Subscriber-level privileges or higher without proper capability checks, allowing them to disconnect the Afosto integration component of the plugin. Afosto is typically used for e-commerce or content delivery integrations, and unauthorized disconnection could disrupt workflows or data synchronization. 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, reflecting a medium severity primarily due to the integrity impact without confidentiality or availability loss. No patches are currently linked, and no known exploits have been reported in the wild. The flaw affects all versions up to and including 2.0.0, indicating that users of this plugin should be vigilant. The vulnerability could be leveraged by malicious insiders or compromised accounts with low privileges to degrade service or disrupt integrations, potentially causing operational issues or data inconsistencies.

For European organizations, the impact of this vulnerability is primarily on the integrity of the plugin's integration with Afosto, which may affect e-commerce operations or content delivery pipelines relying on this connection. Unauthorized disconnection could lead to data synchronization failures, degraded user experience, or operational disruptions. While it does not expose sensitive data or cause denial of service, the ability for low-privilege users to alter plugin behavior without authorization undermines trust in access controls and could be leveraged in broader attack chains. Organizations with high reliance on WordPress for their web presence, especially those using this specific plugin for image optimization and e-commerce integration, face increased risk. The impact is more pronounced in sectors where uptime and data integrity are critical, such as retail, publishing, and digital marketing agencies.

Immediate mitigation steps include restricting Subscriber-level users' ability to access or invoke the vulnerable AJAX endpoint by implementing custom capability checks or using security plugins that enforce stricter access controls on AJAX actions. Administrators should audit user roles and permissions to minimize unnecessary Subscriber accounts and monitor logs for suspicious AJAX requests targeting 'wp_ajax_wpqai_disconnect_quicq_afosto'. Network-level controls such as Web Application Firewalls (WAFs) can be configured to detect and block unauthorized calls to this endpoint. Until an official patch is released, consider disabling the plugin if feasible or isolating it in a staging environment. Regularly check for updates from the vendor and apply patches promptly once available. Additionally, educating users about the risks of compromised low-privilege accounts and enforcing strong authentication policies can reduce exploitation likelihood.