WordPress Clanora theme < 1.3.1 - Arbitrary File Upload vulnerability

The Arbitrary File Access vulnerability presents a severe risk to systems running vulnerable Clanora instances. An attacker could upload a web shell, allowing for remote code execution and complete control over the server. Sensitive data, including configuration files, database credentials, and user information, could be exfiltrated. Furthermore, successful exploitation could facilitate lateral movement within the network, compromising other systems and applications. The ability to upload arbitrary files bypasses standard security measures, significantly expanding the attack surface. This vulnerability shares similarities with other file upload vulnerabilities where insufficient validation allows for the execution of malicious payloads.

1. आरक्षित2025-05-15
2. प्रकाशित2025-10-22
3. संशोधित2026-04-28
4. EPSS अद्यतन2026-03-23

The primary mitigation for CVE-2025-48106 is to immediately upgrade Clanora to version 1.3.1 or later. If upgrading is not immediately feasible, implement temporary workarounds to reduce the risk. These include strict file type validation on the server-side, restricting uploaded file sizes, and disabling file uploads entirely if not essential. Consider implementing a Web Application Firewall (WAF) with rules to block suspicious file uploads based on file extensions and content analysis. Regularly scan the system for unauthorized files and monitor file upload logs for unusual activity. After upgrading, confirm the fix by attempting to upload a known malicious file type (e.g., a PHP script) and verifying that the upload is rejected.