CVE-2025-53247 is a high-severity vulnerability classified under CWE-98, which pertains to improper control of filenames used in include or require statements within PHP programs. Specifically, this vulnerability affects the WPInterface BlogMarks plugin, versions up to and including 1.0.8. The flaw allows for PHP Local File Inclusion (LFI), which can be exploited by an attacker to include arbitrary files on the server. This occurs because the application does not properly validate or sanitize user-supplied input that determines which files are included or required during execution. Although the description mentions PHP Remote File Inclusion (RFI), the actual impact is local file inclusion, which can still lead to significant security risks. Exploiting this vulnerability could allow an attacker to read sensitive files, execute arbitrary code, or escalate privileges by including malicious files or system files. The CVSS v3.1 base score is 8.1, indicating a high severity with the vector AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H, meaning the attack can be performed remotely over the network but requires high attack complexity, no privileges, and no user interaction, with high impact on confidentiality, integrity, and availability. No known exploits are currently reported in the wild, and no patches have been linked yet, suggesting that mitigation may require vendor updates or manual code review and hardening. The vulnerability was reserved in June 2025 and published in August 2025, indicating it is a recent discovery.

For European organizations using the WPInterface BlogMarks plugin, this vulnerability poses a significant risk. Successful exploitation could lead to unauthorized disclosure of sensitive data, including configuration files, credentials, or personal data protected under GDPR. Integrity of data and systems could be compromised by executing arbitrary code or modifying files, potentially leading to defacement, data corruption, or further lateral movement within networks. Availability could also be impacted if attackers disrupt services or cause system crashes. Given the high confidentiality, integrity, and availability impacts, organizations could face operational disruptions, regulatory penalties, and reputational damage. The fact that no user interaction or privileges are required increases the risk, especially for publicly accessible web servers. European entities relying on this plugin for content management or bookmarking services should prioritize assessment and mitigation to prevent exploitation.

1. Immediate action should include auditing all instances of WPInterface BlogMarks plugin to identify affected versions (up to 1.0.8). 2. Since no official patches are currently linked, organizations should consider temporarily disabling the plugin or restricting access to affected endpoints via web application firewalls (WAF) or network controls. 3. Implement strict input validation and sanitization on any parameters controlling file inclusion to prevent malicious input. 4. Employ PHP configuration hardening, such as disabling allow_url_include and restricting file system permissions to limit the impact of LFI. 5. Monitor web server logs for suspicious requests attempting to exploit file inclusion. 6. Engage with the vendor or community for updates or patches and apply them promptly once available. 7. Conduct penetration testing focused on file inclusion vulnerabilities to verify remediation effectiveness. 8. Consider deploying runtime application self-protection (RASP) tools that can detect and block such attacks in real time.