CVE-2025-11467 is a Blind Server-Side Request Forgery (SSRF) vulnerability identified in the 'RSS Aggregator by Feedzy – Feed to Post, Autoblogging, News & YouTube Video Feeds Aggregator' WordPress plugin, which is widely used for aggregating RSS feeds and autoblogging. The vulnerability exists in the feedzy_lazy_load function, which improperly validates user-supplied input used to generate server-side HTTP requests. This flaw allows unauthenticated attackers to induce the server to send HTTP requests to arbitrary locations, including internal network resources that are otherwise inaccessible externally. Because the SSRF is blind, attackers do not receive direct responses but can infer information based on side effects or timing. The vulnerability affects all versions up to and including 5.1.1. The CVSS 3.1 base score is 5.8, reflecting medium severity with network attack vector, no privileges required, no user interaction, and limited confidentiality impact. Exploitation could lead to information disclosure from internal services or potentially facilitate further attacks such as internal network reconnaissance or pivoting. No patches or exploits are currently publicly available, but the risk remains significant due to the plugin's popularity and the common deployment of WordPress in various environments.

For European organizations, this SSRF vulnerability poses a risk primarily to those running WordPress sites with the affected Feedzy plugin installed. Exploitation could allow attackers to access internal services behind firewalls, potentially exposing sensitive data or internal APIs. This could lead to information leakage, unauthorized internal network scanning, or indirect attacks on internal infrastructure. Given the plugin’s use in content aggregation and autoblogging, compromised sites might also be manipulated to serve malicious content or be used as pivot points for broader attacks. The impact is heightened for organizations with complex internal networks or those relying on internal web services for critical operations. Additionally, public-facing WordPress sites in sectors such as finance, healthcare, and government in Europe could be targeted to gain footholds or gather intelligence. The medium severity indicates that while direct system compromise is unlikely solely from this vulnerability, it can be a stepping stone in multi-stage attacks.

Immediate mitigation should focus on restricting the ability of the WordPress server to make arbitrary outbound HTTP requests. Network-level controls such as egress filtering and web application firewalls (WAFs) can be configured to limit outbound connections to trusted endpoints only. Administrators should monitor and log outbound HTTP requests for suspicious activity. Since no official patch is currently available, disabling or uninstalling the Feedzy plugin temporarily can eliminate the attack surface. When a patch is released, prompt updating to the fixed version is critical. Additionally, applying the principle of least privilege to the web server environment, including limiting its network access and permissions, will reduce potential exploitation impact. Regular vulnerability scanning and penetration testing focused on SSRF vectors can help detect exploitation attempts. Finally, educating site administrators about the risks of installing unvetted plugins and maintaining an inventory of installed plugins will improve overall security posture.