CVE-2025-39584 Overview
CVE-2025-39584 is a PHP Local File Inclusion (LFI) vulnerability affecting the Arraytics Eventin (wp-event-solution) WordPress plugin. The flaw stems from improper control of filenames used in PHP include/require statements [CWE-98]. Attackers with low-level authenticated access can leverage the issue to include arbitrary local PHP files on the underlying server.
The vulnerability affects all versions of Eventin up to and including 4.0.25. Successful exploitation can lead to disclosure of sensitive configuration files, execution of attacker-controlled PHP, and full compromise of the WordPress site.
Critical Impact
Authenticated attackers can include and execute local PHP files on vulnerable WordPress installations, leading to information disclosure, code execution, and site compromise.
Affected Products
- Arraytics Eventin (wp-event-solution) WordPress plugin
- All versions from n/a through 4.0.25
- WordPress installations using the Themewinter Eventin plugin
Discovery Timeline
- 2025-04-16 - CVE-2025-39584 published to NVD
- 2026-04-23 - Last updated in NVD database
Technical Details for CVE-2025-39584
Vulnerability Analysis
The vulnerability is categorized under [CWE-98], Improper Control of Filename for Include/Require Statement in PHP Program. The Eventin plugin passes user-controllable input into a PHP include or require statement without proper validation or sanitization. This allows an authenticated attacker to direct the include operation toward arbitrary file paths on the local filesystem.
The Patchstack advisory classifies the issue as a Local File Inclusion vulnerability rather than full Remote File Inclusion, indicating that allow_url_include exploitation is not the primary attack path. Instead, attackers reference existing PHP files on the server, including uploaded content or files inside the WordPress installation, to achieve code execution.
The attack vector is network-based and requires low-privilege authentication. The attack complexity is high, which suggests specific conditions must be met for reliable exploitation. Once exploited, the impact spans confidentiality, integrity, and availability of the affected site.
Root Cause
The root cause is missing validation on a filename parameter consumed by a PHP file inclusion function inside the Eventin plugin. The plugin trusts the supplied path and concatenates it into an include/require call without enforcing an allowlist, path canonicalization, or extension checks.
Attack Vector
An authenticated user sends a crafted request to a vulnerable Eventin endpoint, supplying a manipulated filename parameter. The plugin resolves the path and includes the targeted file, executing any PHP code it contains. Attackers commonly chain LFI with file upload primitives, log poisoning, or wrapper abuse to convert file inclusion into arbitrary code execution. See the Patchstack WordPress Vulnerability Report for technical context.
Detection Methods for CVE-2025-39584
Indicators of Compromise
- Web server access logs containing requests to Eventin plugin endpoints with path traversal sequences such as ../, encoded variants (%2e%2e%2f), or absolute paths.
- Requests where filename parameters reference sensitive files such as wp-config.php, /etc/passwd, or files inside wp-content/uploads.
- Unexpected PHP execution originating from uploaded media files or temporary directories.
- New or modified PHP files in plugin or upload directories following suspicious authenticated requests.
Detection Strategies
- Inspect WordPress and PHP error logs for include/require warnings referencing unusual paths inside the wp-event-solution plugin code.
- Deploy WAF rules that flag traversal payloads and absolute paths in parameters bound for the Eventin plugin.
- Correlate authenticated session activity with file-system writes and PHP process executions on the web server.
Monitoring Recommendations
- Enable file integrity monitoring on wp-content/plugins/wp-event-solution/ and the WordPress core directories.
- Track outbound network connections from the PHP-FPM or web server process to detect post-exploitation callbacks.
- Monitor creation of new administrator accounts, scheduled tasks, or modified .htaccess files following Eventin requests.
How to Mitigate CVE-2025-39584
Immediate Actions Required
- Update the Arraytics Eventin plugin to a version newer than 4.0.25 as soon as the vendor publishes a patched release.
- Audit authenticated user accounts and remove unused or untrusted low-privilege accounts that could be abused for exploitation.
- Review the web server and WordPress logs for prior exploitation attempts dating back to the plugin's installation.
Patch Information
The issue affects Eventin versions through 4.0.25. Administrators should consult the Patchstack WordPress Vulnerability Report for the latest fixed version information and apply the vendor-supplied update through the WordPress plugin manager.
Workarounds
- Temporarily deactivate the Eventin plugin until a patched version is installed.
- Restrict access to WordPress authenticated endpoints using IP allowlisting or additional authentication factors.
- Configure PHP with open_basedir to constrain file inclusion to known directories and set allow_url_include = Off in php.ini.
- Deploy WAF signatures that block path traversal patterns and suspicious filename parameters targeting wp-event-solution routes.
# Configuration example: harden PHP against file inclusion abuse
# /etc/php/php.ini
allow_url_include = Off
allow_url_fopen = Off
open_basedir = "/var/www/html:/tmp"
# Disable the plugin via WP-CLI until patched
wp plugin deactivate wp-event-solution
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
