The vulnerability identified as CVE-2025-13419 affects the 'Guest posting / Frontend Posting / Front Editor – WP Front User Submit' plugin for WordPress, maintained by aharonyan. The issue arises from a missing authorization check on the REST API endpoint '/wp-json/bfe/v1/revert', which is intended to allow reverting changes or managing frontend submissions. Due to the absence of capability verification, unauthenticated attackers can invoke this endpoint to delete arbitrary media attachments from the WordPress media library. This flaw affects all plugin versions up to and including 5.0.0. The vulnerability is categorized under CWE-862, indicating a missing authorization control that permits unauthorized modification of data. The CVSS v3.1 base score is 5.3, reflecting a medium severity level. The vector indicates network attack vector (AV:N), low attack complexity (AC:L), no privileges required (PR:N), no user interaction (UI:N), unchanged scope (S:U), no confidentiality impact (C:N), integrity impact (I:L), and no availability impact (A:N). There are no known public exploits or patches available at the time of publication. The vulnerability primarily threatens the integrity of media content by allowing deletion without authentication, potentially disrupting website content and user experience. The plugin is commonly used to enable frontend user submissions and guest posting capabilities on WordPress sites, making it attractive for attackers targeting content management systems. The lack of authentication requirements and ease of exploitation increase the risk of automated or opportunistic attacks. This vulnerability highlights the critical need for proper authorization checks on REST API endpoints in WordPress plugins, especially those handling content modifications. Organizations relying on this plugin should monitor for suspicious activity and prepare to apply patches or implement access restrictions once available.

For European organizations, the impact of CVE-2025-13419 centers on unauthorized deletion of media files hosted on WordPress sites using the vulnerable plugin. This can lead to loss of important digital assets such as images, videos, and documents, potentially disrupting marketing, communications, and customer engagement efforts. Websites relying on user-generated content or frontend submissions may experience content integrity issues, undermining trust and user experience. While the vulnerability does not directly affect confidentiality or availability, the integrity compromise can cause operational challenges and reputational damage. Organizations with high web presence or e-commerce platforms using WordPress are particularly vulnerable to content tampering or sabotage. Additionally, the lack of authentication means attackers can exploit this remotely without credentials, increasing the attack surface. Although no known exploits are reported yet, the medium severity and ease of exploitation warrant proactive mitigation to prevent potential targeted or automated attacks. The impact is more pronounced for organizations that do not have robust backup and recovery procedures for media content or lack monitoring on REST API usage.

1. Monitor official plugin channels and WordPress security advisories for patches addressing CVE-2025-13419 and apply updates promptly once released. 2. Until patches are available, restrict access to the vulnerable REST API endpoint '/wp-json/bfe/v1/revert' using web application firewalls (WAFs), reverse proxies, or server-level rules to block unauthenticated requests. 3. Implement strict access controls on WordPress REST API endpoints by configuring authentication and capability checks, possibly through custom code or security plugins that enforce authorization. 4. Regularly back up WordPress media libraries and site content to enable rapid restoration in case of unauthorized deletions. 5. Enable logging and monitoring of REST API calls to detect unusual or unauthorized activity targeting the '/wp-json/bfe/v1/revert' endpoint. 6. Educate site administrators about the risks of installing plugins without proper security reviews and encourage minimal plugin usage to reduce attack surface. 7. Consider isolating or sandboxing frontend submission functionalities to limit potential damage from exploitation. 8. Review user roles and permissions to ensure least privilege principles are enforced across the WordPress environment.