CVE-2025-64258 is a vulnerability identified in the wpweb Follow My Blog Post WordPress plugin, affecting versions up to and including 2.3.9. The flaw allows an unauthenticated attacker to remotely retrieve embedded sensitive system information from the affected plugin, exposing confidential data without requiring any privileges or user interaction. The vulnerability is classified under the category of 'Exposure of Sensitive System Information to an Unauthorized Control Sphere,' indicating that sensitive data intended to be protected is accessible to unauthorized parties. The CVSS v3.1 base score is 7.5 (high), with the vector indicating network attack vector (AV:N), low attack complexity (AC:L), no privileges required (PR:N), no user interaction (UI:N), unchanged scope (S:U), high confidentiality impact (C:H), and no impact on integrity or availability (I:N/A:N). This means the vulnerability can be exploited remotely with relative ease and results in significant confidentiality breaches. No known exploits have been reported in the wild yet, but the vulnerability was published on December 18, 2025, and was reserved on October 29, 2025. The lack of available patches at the time of reporting suggests that users should be vigilant and apply updates as soon as they are released. The plugin is used in WordPress environments, which are widely deployed across many sectors, including media, blogging, and content management. The exposure of sensitive system information could include configuration details, internal paths, or other data that could facilitate further attacks or data breaches.

For European organizations, the exposure of sensitive system information can lead to increased risk of targeted attacks, including privilege escalation, lateral movement, or data exfiltration. Organizations relying on the Follow My Blog Post plugin for content syndication or blog management may inadvertently leak confidential infrastructure details, which attackers can leverage to compromise other systems or services. The impact is particularly critical for sectors handling sensitive or regulated data, such as finance, healthcare, and government entities. Additionally, the reputational damage from data exposure incidents can be significant, especially under the GDPR framework, which mandates strict data protection and breach notification requirements. The vulnerability's ease of exploitation without authentication increases the attack surface, making it a viable vector for mass scanning and automated attacks. European organizations with public-facing WordPress sites using this plugin are at heightened risk, and failure to remediate promptly could lead to compliance violations and financial penalties.

1. Monitor official wpweb channels and Patchstack for the release of security patches addressing CVE-2025-64258 and apply them immediately upon availability. 2. In the interim, restrict access to the Follow My Blog Post plugin endpoints by implementing web application firewall (WAF) rules that block unauthorized requests targeting known vulnerable paths or parameters. 3. Conduct thorough vulnerability scans across all WordPress instances to identify installations of the affected plugin and versions. 4. Limit exposure by disabling or uninstalling the Follow My Blog Post plugin if it is not essential to business operations. 5. Implement strict access controls and network segmentation to reduce the risk of sensitive data exposure from web-facing applications. 6. Enable detailed logging and monitor for unusual access patterns or data retrieval attempts related to the plugin. 7. Educate site administrators on the risks and signs of exploitation to enhance early detection and response capabilities. 8. Consider deploying runtime application self-protection (RASP) solutions that can detect and block exploitation attempts in real time.