CVE-2025-23948: Background Animation Blocks LFI Flaw

CVE-2025-23948 Overview

CVE-2025-23948 is a Local File Inclusion (LFI) vulnerability in the Webarea Background animation blocks WordPress plugin. The flaw stems from improper control of filenames used in PHP include or require statements [CWE-98]. Affected versions include all releases up to and including 2.1.5. Unauthenticated attackers can exploit the issue over the network to include arbitrary local PHP files, leading to code execution within the WordPress process. The vulnerability impacts confidentiality, integrity, and availability of the host site.

Critical Impact

Successful exploitation allows unauthenticated attackers to include and execute arbitrary local PHP files on a vulnerable WordPress site, enabling site takeover.

Affected Products

• Webarea Background animation blocks plugin for WordPress
• All versions from initial release through 2.1.5
• WordPress sites with the background-animation-blocks plugin installed and active

Discovery Timeline

• 2025-01-22 - CVE-2025-23948 published to the National Vulnerability Database
• 2026-04-23 - Last updated in NVD database

Technical Details for CVE-2025-23948

Vulnerability Analysis

The vulnerability is classified under [CWE-98] as Improper Control of Filename for Include/Require Statement in PHP Program. The background-animation-blocks plugin accepts attacker-influenced input and uses it within a PHP file inclusion path without adequate validation. This allows an attacker to coerce the plugin into loading arbitrary local files as PHP code.

The EPSS score of 1.258% places this issue in the 79th percentile for exploitation likelihood. Although no public proof of concept is recorded in the enriched data, LFI flaws in WordPress plugins are routinely weaponized once disclosed. Exploitation does not require authentication or user interaction.

Root Cause

The plugin constructs a filesystem path used by a PHP include or require call from request-controlled data. Missing allowlist validation and sanitization permit traversal sequences and unexpected file targets to reach the inclusion call. PHP then parses any included file as code, regardless of its intended purpose.

Attack Vector

The attack vector is network-based with high attack complexity. An unauthenticated attacker sends a crafted HTTP request to the vulnerable WordPress endpoint exposed by the plugin. The request supplies a manipulated filename parameter that is concatenated into the include path. On execution, the targeted local file is parsed as PHP, granting code execution in the web server context.

No verified exploit code is published in the referenced sources. See the Patchstack WordPress Vulnerability Report for vendor-confirmed technical details.

Detection Methods for CVE-2025-23948

Indicators of Compromise

• HTTP requests to plugin endpoints containing path traversal sequences such as ../, ..%2f, or encoded null bytes
• Web server access logs showing parameters referencing sensitive files like wp-config.php, /etc/passwd, or /proc/self/environ
• Unexpected PHP errors or warnings referencing include() or require() failures from the background-animation-blocks plugin directory
• New or modified PHP files in plugin or uploads directories following suspicious requests

Detection Strategies

• Inspect web server and WordPress logs for requests targeting background-animation-blocks plugin paths with filename parameters
• Deploy web application firewall rules that flag path traversal patterns and PHP wrapper schemes such as php://filter and php://input
• Run plugin inventory checks across managed WordPress instances to enumerate installs at version 2.1.5 or earlier
• Compare file integrity baselines for the WordPress installation to identify unauthorized PHP files

Monitoring Recommendations

• Forward WordPress, PHP-FPM, and web server logs to a centralized SIEM for correlation and retention
• Alert on outbound network connections initiated by the web server process to uncommon destinations after plugin requests
• Monitor process creation events on the host where the web server spawns shells, package managers, or scripting interpreters
• Track changes to administrator accounts and scheduled tasks within the WordPress database

How to Mitigate CVE-2025-23948

Immediate Actions Required

• Identify any WordPress site running background-animation-blocks version 2.1.5 or earlier and place it behind a WAF or disable the plugin
• Review web access logs for prior exploitation attempts against plugin endpoints
• Rotate WordPress administrator passwords, API keys, and database credentials if exploitation is suspected
• Restore from a known-good backup if unauthorized PHP files or accounts are discovered

Patch Information

No fixed version is identified in the enriched CVE data; the advisory lists all versions through 2.1.5 as affected. Administrators should monitor the Patchstack WordPress Vulnerability Report and the plugin's WordPress.org listing for a patched release. Until a vendor patch is available, removing the plugin is the most reliable remediation.

Workarounds

• Deactivate and uninstall the background-animation-blocks plugin until a patched version is released
• Apply WAF signatures that block path traversal, PHP wrapper schemes, and null-byte sequences in HTTP parameters
• Restrict PHP open_basedir and disable_functions to limit the impact of file inclusion
• Enforce least-privilege filesystem permissions so the web server cannot read sensitive configuration files outside the WordPress root

# Configuration example: harden php.ini against LFI impact
open_basedir = "/var/www/html:/tmp"
allow_url_include = Off
allow_url_fopen = Off
expose_php = Off