CVE-2025-54019: Alone Theme Code Injection Vulnerability

CVE-2025-54019 Overview

CVE-2025-54019 is a code injection vulnerability affecting the Beplusthemes Alone WordPress theme in versions up to and including 7.8.5. The flaw is classified under CWE-94: Improper Control of Generation of Code and allows attackers to inject and execute arbitrary code on affected WordPress installations. Exploitation requires no authentication and can be conducted over the network, though attack complexity is high. Successful exploitation can lead to arbitrary code execution within the context of the WordPress application, impacting site confidentiality, integrity, and availability.

Critical Impact
Unauthenticated attackers can inject arbitrary code into WordPress sites running vulnerable versions of the Alone theme, potentially leading to full site compromise.

Affected Products

Beplusthemes Alone WordPress theme versions prior to and including 7.8.5
WordPress installations using the Alone theme by Beplusthemes
Any site with the vulnerable theme active or accessible

Discovery Timeline

2025-08-20 - CVE-2025-54019 published to NVD
2026-06-17 - Last updated in NVD database

Technical Details for CVE-2025-54019

Vulnerability Analysis

The vulnerability stems from improper control of code generation within the Beplusthemes Alone theme. The theme processes attacker-controllable input in a manner that permits the input to be interpreted as executable code by the PHP runtime. Because WordPress themes execute in the application context, injected code runs with the privileges of the web server process.

The vulnerability falls under [CWE-94], which covers cases where software constructs code segments from external input without sufficient neutralization. Attackers who can reach the vulnerable code path can alter the intended execution flow of the application. The high attack complexity indicates that specific conditions must be met for exploitation to succeed.

Root Cause

The root cause is insufficient sanitization or validation of input that flows into dynamic code evaluation constructs within the theme. Common patterns for CWE-94 in WordPress themes include unsafe use of eval(), create_function(), call_user_func() with attacker-influenced callbacks, or unsafe deserialization that permits object instantiation with side effects.

Attack Vector

The attack vector is network-based and does not require authentication or user interaction. An attacker crafts a request targeting the vulnerable theme endpoint or functionality and delivers a payload that the theme processes as code. Refer to the Patchstack WordPress Vulnerability advisory for technical details on the affected code path.

No public proof-of-concept exploit has been published at this time, and the vulnerability is not listed in the CISA Known Exploited Vulnerabilities catalog.

Detection Methods for CVE-2025-54019

Indicators of Compromise

Unexpected PHP files or webshells within the theme directory wp-content/themes/alone/
Modified theme files with recent timestamps that do not correspond to legitimate updates
Outbound network connections from the web server to unknown hosts following suspicious HTTP requests
New administrative WordPress accounts or unexpected changes to existing user roles

Detection Strategies

Inventory WordPress installations and identify sites running the Alone theme at version 7.8.5 or earlier
Review web server access logs for anomalous POST requests targeting theme endpoints with unusual payloads
Monitor PHP error logs for evidence of dynamic code evaluation failures or unexpected function calls
Compare theme file hashes against known-good versions to identify tampering

Monitoring Recommendations

Enable file integrity monitoring on the wp-content/themes/ directory
Log and alert on process execution originating from the PHP-FPM or web server user
Ingest WordPress and web server logs into a centralized log platform for correlation and retention
Monitor for creation of new PHP files in web-accessible directories

How to Mitigate CVE-2025-54019

Immediate Actions Required

Identify all WordPress sites running the Beplusthemes Alone theme and document the installed version
Update the Alone theme to a version later than 7.8.5 once a patched release is available from the vendor
Restrict access to the WordPress admin interface and theme endpoints using IP allowlisting or a web application firewall
Review theme files, user accounts, and scheduled tasks for signs of prior compromise

Patch Information

The vulnerability affects Alone theme versions through 7.8.5. Consult the Patchstack advisory for the latest patched version information from Beplusthemes. Apply the vendor-supplied update through the WordPress admin dashboard or by replacing theme files manually.

Workarounds

Deactivate the Alone theme and switch to a supported theme until a patched version is deployed
Deploy a web application firewall rule that blocks requests containing PHP code patterns targeting theme endpoints
Disable PHP execution in theme directories where dynamic code evaluation is not required
Restrict file write permissions on the theme directory to prevent attackers from persisting webshells

bash

# Restrict write permissions on the Alone theme directory
chown -R root:www-data /var/www/html/wp-content/themes/alone
find /var/www/html/wp-content/themes/alone -type d -exec chmod 755 {} \;
find /var/www/html/wp-content/themes/alone -type f -exec chmod 644 {} \;