CVE-2026-28050: 
WordPress vulnerability analysis and mitigation

CVE-2026-28050 is a PHP Local File Inclusion (LFI) vulnerability in the ThemeREX Beacon WordPress theme, caused by improper control of filenames in PHP include/require statements (CWE-98). It affects all versions of the Beacon theme through 2.24 and was published on March 5, 2026, with the CVE assigned by Patchstack. The vulnerability carries a CVSS v3.1 base score of 8.1 (High), exploitable remotely without authentication or user interaction, though with high attack complexity (Feedly, EUVD).

The root cause is classified under CWE-98 (Improper Control of Filename for Include/Require Statement in PHP Program), where user-supplied input is insufficiently validated before being passed to PHP file inclusion functions (include/require). An unauthenticated remote attacker can manipulate the filename parameter to cause the server to include arbitrary local files, effectively achieving Local File Inclusion (LFI). Exploitation requires high attack complexity, suggesting that specific conditions or knowledge of the target environment may be necessary to successfully trigger the vulnerability. No public proof-of-concept code has been identified at this time (Feedly, Patchstack).

Successful exploitation allows an unauthenticated attacker to include and execute arbitrary local files on the web server, leading to unauthorized disclosure of sensitive files (e.g., WordPress configuration files containing database credentials), potential remote code execution if writable files or log poisoning techniques are leveraged, and full compromise of the web application and underlying system. All three security pillars — confidentiality, integrity, and availability — are rated as High impact in the CVSS scoring (Feedly).

There is currently no public proof-of-concept exploit and no evidence of active in-the-wild exploitation. The EPSS score is approximately 0.053%, indicating a low probability of exploitation in the near term. The vulnerability has not been added to the CISA Known Exploited Vulnerabilities (KEV) catalog. No threat actor attribution has been reported (Feedly).

1. Reconnaissance: Identify WordPress sites using the ThemeREX Beacon theme version 2.24 or earlier using tools like WPScan, Shodan, or manual inspection of theme metadata (e.g., style.css version header).
2. Identify vulnerable parameter: Analyze the theme's PHP source code or observed HTTP requests to locate endpoints where user-controlled input is passed to a PHP include or require statement without adequate sanitization.
3. Craft LFI payload: Construct an HTTP request with a manipulated filename parameter targeting sensitive local files, such as ../../../../wp-config.php or /etc/passwd, using path traversal sequences.
4. Send malicious request: Submit the crafted request to the vulnerable endpoint on the target WordPress installation and observe the server response for file contents.
5. Escalate (optional): If log files or other writable resources are accessible, attempt log poisoning by injecting PHP code into a log file and then including it via the LFI vector to achieve remote code execution (Feedly).

• Network: Unusual HTTP requests containing path traversal sequences (e.g., ../, ..%2F, ....//) in query parameters or POST body targeting the Beacon theme endpoints.
• Logs: WordPress or web server access logs showing requests with encoded traversal patterns or references to sensitive files like wp-config.php, /etc/passwd, or PHP log files.
• File System: Unexpected access or modification timestamps on sensitive files such as wp-config.php; presence of web shells in the theme directory.
• Process: Unusual PHP child processes spawned by the web server process (e.g., bash, curl, wget) that may indicate successful code execution following log poisoning.

Users of the ThemeREX Beacon WordPress theme should upgrade to a version newer than 2.24 as soon as a patched release becomes available. In the interim, the following mitigations are recommended: deploy a Web Application Firewall (WAF) with rules to detect and block path traversal and file inclusion attempts; restrict PHP file permissions at the OS level to limit readable files; disable PHP's allow_url_include directive in php.ini; and isolate affected systems from untrusted networks. Monitor web server and WordPress logs for suspicious file inclusion patterns (Feedly, Patchstack).

The vulnerability was noted in the Wordfence Intelligence Weekly WordPress Vulnerability Report covering the period of February 23 to March 1, 2026, indicating it received standard industry tracking attention. No significant vendor statements, notable researcher commentary, or broader media coverage have been identified beyond routine vulnerability database entries (Wordfence).