CVE-2025-47531: XT Event Widget LFI Vulnerability

CVE-2025-47531 Overview

CVE-2025-47531 is a PHP Local File Inclusion (LFI) vulnerability in the Xylus Themes XT Event Widget for Social Events WordPress plugin, also known as xt-facebook-events. The flaw is classified under CWE-98, Improper Control of Filename for Include/Require Statement in PHP Program. Affected versions include all releases up to and including 1.1.7. An authenticated attacker with low privileges can manipulate file path parameters to load arbitrary PHP files from the server, leading to code execution within the WordPress context.

Critical Impact
Authenticated attackers can include arbitrary local PHP files, resulting in remote code execution, full site compromise, and exposure of sensitive WordPress configuration data.

Affected Products

Xylus Themes XT Event Widget for Social Events (xt-facebook-events) plugin
All versions from initial release through 1.1.7
WordPress installations with the vulnerable plugin activated

Discovery Timeline

2025-05-07 - CVE-2025-47531 published to the National Vulnerability Database
2026-04-23 - Last updated in NVD database

Technical Details for CVE-2025-47531

Vulnerability Analysis

The vulnerability stems from improper validation of user-supplied input passed to PHP include or require statements within the plugin. Attackers can supply a path that the plugin then resolves and loads from the local filesystem. While the CVE title references PHP Remote File Inclusion, the practical impact is confirmed as Local File Inclusion (LFI) because the allow_url_include directive is typically disabled in modern PHP deployments.

Exploitation requires network access and low-level authenticated access to the WordPress site. No user interaction is needed. Successful exploitation grants the attacker the ability to load PHP files already present on the server, including log files, uploaded media, or session files containing attacker-controlled PHP code. This converts a file inclusion bug into arbitrary code execution under the web server account.

The EPSS score is 0.549% with a 41.46 percentile ranking, reflecting moderate but non-trivial exploitation likelihood for an internet-facing WordPress component.

Root Cause

The root cause is the absence of an allowlist or sanitization routine around a filename parameter that flows into a PHP include, include_once, require, or require_once call. Path traversal sequences such as ../ are not stripped, and the resolved path is not constrained to a safe directory. See the Patchstack Vulnerability Report for advisory details.

Attack Vector

An attacker authenticates to the WordPress instance using a low-privileged account such as Contributor or Subscriber. The attacker then issues an HTTP request to a vulnerable plugin endpoint, supplying a crafted parameter that references a path on the local filesystem. The plugin includes the file, executing its PHP contents. Attackers commonly chain this with log poisoning, malicious image uploads, or session file manipulation to stage executable payloads before triggering inclusion.

The vulnerability mechanism is described in prose only; no verified public proof-of-concept code is published at this time. Refer to the vendor advisory linked above for technical specifics.

Detection Methods for CVE-2025-47531

Indicators of Compromise

HTTP requests to xt-facebook-events plugin endpoints containing path traversal sequences such as ../, ..%2f, or absolute filesystem paths in query parameters
Unexpected PHP include or require errors in web server logs referencing files outside the plugin directory
Web server processes spawning shell, wget, curl, or php child processes immediately after requests to the plugin
New or modified PHP files in wp-content/uploads/ or other writable WordPress directories

Detection Strategies

Monitor WordPress access logs for requests targeting xt-facebook-events plugin parameters with suspicious file path values
Deploy Web Application Firewall (WAF) rules that detect path traversal patterns and php://, file://, or data:// stream wrappers
Inspect PHP error logs for failed include attempts that indicate active enumeration

Monitoring Recommendations

Track changes to the WordPress plugin directory and uploads folder using file integrity monitoring
Alert on outbound network connections initiated by the PHP-FPM or web server user that fall outside normal patterns
Correlate authentication events from low-privileged WordPress accounts with subsequent plugin endpoint access

How to Mitigate CVE-2025-47531

Immediate Actions Required

Deactivate and remove the XT Event Widget for Social Events plugin if a patched version is not available for the deployed environment
Audit all WordPress user accounts and disable or remove unused low-privileged accounts that could be leveraged for authenticated exploitation
Review web server logs since the plugin was installed for evidence of file inclusion attempts or post-exploitation activity
Rotate WordPress secret keys, database credentials, and administrator passwords if compromise is suspected

Patch Information

At the time of NVD publication, the advisory indicates the issue affects versions up to and including 1.1.7. Administrators should consult the Patchstack Vulnerability Report and the vendor's plugin page for the latest fixed release and upgrade guidance.

Workarounds

Restrict access to the WordPress admin area and plugin endpoints with IP allowlists or VPN-only access
Configure PHP with open_basedir restrictions to limit which directories the web server can read for include and require calls
Ensure allow_url_include and allow_url_fopen are set to Off in php.ini to prevent remote inclusion variants
Deploy WAF rules that block path traversal sequences and PHP stream wrappers in HTTP parameters targeting the plugin

bash

# 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_functions = "exec,passthru,shell_exec,system,proc_open,popen"