CVE-2025-60730 identifies an arbitrary file deletion vulnerability in PerfreeBlog version 4.0.11, specifically within the unInstallTheme function. This function is intended to remove themes from the blogging platform but lacks sufficient validation or authorization checks, enabling an attacker to specify arbitrary file paths for deletion. The vulnerability arises because the function does not properly sanitize or restrict the input parameters controlling which files are deleted, allowing attackers to delete critical files outside the intended theme directories. This can lead to denial of service by removing essential application files or configuration data, potentially causing the blog or even the underlying web server to malfunction. Although no public exploits have been reported, the vulnerability's nature suggests that exploitation could be straightforward if the function is accessible remotely without authentication or with weak access controls. The absence of a CVSS score indicates that the vulnerability is newly published and not yet fully assessed. However, arbitrary file deletion vulnerabilities generally pose a high risk due to their impact on system integrity and availability. The vulnerability affects PerfreeBlog 4.0.11, a blogging platform whose market penetration in Europe is niche but present, especially among small to medium enterprises and personal bloggers. The lack of patch links suggests that a fix may not yet be available, emphasizing the need for immediate mitigation steps. The vulnerability's exploitation could be leveraged by attackers to disrupt services, erase logs to cover tracks, or prepare for further attacks by deleting security-related files.

For European organizations, the arbitrary file deletion vulnerability in PerfreeBlog 4.0.11 could lead to significant operational disruptions. Deletion of critical files may cause website outages, loss of data integrity, and potential exposure to further attacks if security files are removed. Small and medium enterprises relying on PerfreeBlog for their web presence could suffer reputational damage and financial losses due to downtime. Additionally, deletion of log files could hinder incident response and forensic investigations. The impact is heightened in sectors where web presence is critical, such as e-commerce, media, and public services. Since the vulnerability may be exploitable remotely and possibly without authentication, attackers could leverage it for targeted attacks or opportunistic exploitation. The lack of known exploits currently limits immediate widespread impact, but the risk remains significant until patches or mitigations are applied.

European organizations using PerfreeBlog 4.0.11 should immediately restrict access to the unInstallTheme function, ensuring it is only accessible to authenticated and authorized users. Implement strict input validation and sanitization on parameters controlling file deletion to prevent path traversal or arbitrary file specification. Employ web application firewalls (WAFs) to detect and block suspicious requests targeting the unInstallTheme function. Monitor file system integrity using tools that can alert administrators to unexpected file deletions. If possible, isolate the blogging platform in a sandboxed environment with limited file system permissions to minimize damage from potential exploitation. Regularly back up website files and configurations to enable quick recovery. Stay alert for official patches or updates from PerfreeBlog developers and apply them promptly once available. Conduct security audits focusing on access controls and input validation in web applications.