CVE-2026-22476: Etchy Theme LFI Vulnerability

CVE-2026-22476 Overview

CVE-2026-22476 is a PHP Local File Inclusion (LFI) vulnerability affecting the Elated-Themes Etchy WordPress theme. The vulnerability stems from improper control of filename for include/require statements in PHP, classified under CWE-98 (PHP Remote File Inclusion). Despite the CWE classification mentioning remote file inclusion, this specific vulnerability allows for local file inclusion attacks, enabling attackers to include arbitrary files from the local server filesystem.

This vulnerability allows malicious actors to manipulate file path parameters to include unintended files, potentially exposing sensitive configuration files, credentials, or enabling further exploitation through log poisoning or other LFI-to-RCE techniques.

Critical Impact
Attackers can exploit this LFI vulnerability to read sensitive server files, potentially including WordPress configuration files containing database credentials, or chain the vulnerability with other techniques to achieve remote code execution.

Affected Products

Elated-Themes Etchy WordPress Theme version 1.0 and earlier
WordPress installations using the Etchy theme

Discovery Timeline

2026-03-05 - CVE-2026-22476 published to NVD
2026-03-05 - Last updated in NVD database

Technical Details for CVE-2026-22476

Vulnerability Analysis

The vulnerability exists due to insufficient input validation and sanitization of user-controlled parameters that are subsequently used in PHP include or require statements within the Etchy WordPress theme. When processing certain requests, the theme fails to properly validate file path inputs, allowing attackers to manipulate these parameters to include arbitrary local files.

Local File Inclusion vulnerabilities in PHP applications are particularly dangerous in WordPress environments because they can potentially expose the wp-config.php file, which contains database credentials and authentication keys. Additionally, attackers may leverage LFI vulnerabilities to read log files containing injected malicious PHP code, effectively escalating the attack to remote code execution.

Root Cause

The root cause of this vulnerability is improper control of filename parameters used in PHP include/require statements (CWE-98). The Etchy theme does not adequately sanitize or validate user input before incorporating it into file inclusion operations. This allows attackers to use directory traversal sequences or other path manipulation techniques to include files outside the intended scope.

Attack Vector

The attack requires network access to a WordPress installation running the vulnerable Etchy theme. An attacker crafts malicious requests containing path traversal sequences (such as ../) or absolute file paths to include sensitive files from the server filesystem.

The vulnerability can be exploited by manipulating parameters in theme template requests to traverse directories and access files such as /etc/passwd on Linux systems or wp-config.php in the WordPress installation. Successful exploitation does not require authentication, making this vulnerability accessible to unauthenticated remote attackers.

For detailed technical information about this vulnerability, refer to the Patchstack WordPress Vulnerability Report.

Detection Methods for CVE-2026-22476

Indicators of Compromise

Unusual HTTP requests containing directory traversal patterns (../, ..%2F, %2e%2e/) targeting theme files
Access attempts to sensitive files such as /etc/passwd, wp-config.php, or .htaccess through theme parameters
Log entries showing requests with encoded path traversal sequences or null byte injections
Unexpected file read operations from the WordPress theme directory

Detection Strategies

Implement Web Application Firewall (WAF) rules to detect and block path traversal patterns in request parameters
Monitor web server access logs for requests containing sequences like ../, ..%2f, %252e%252e/, or similar encoded variants
Deploy file integrity monitoring on critical WordPress configuration files to detect unauthorized access attempts
Enable verbose logging on the WordPress installation to capture detailed request parameters

Monitoring Recommendations

Set up alerts for HTTP requests matching LFI attack patterns targeting the Etchy theme
Monitor for anomalous file access patterns from the web server process, particularly reads of system files or files outside the web root
Review server logs regularly for evidence of reconnaissance or exploitation attempts
Implement intrusion detection signatures for common LFI exploitation techniques

How to Mitigate CVE-2026-22476

Immediate Actions Required

Disable or remove the Etchy theme immediately if it is not essential for site functionality
Implement Web Application Firewall rules to block path traversal attempts targeting the vulnerable theme
Review server access logs for evidence of prior exploitation attempts
Consider switching to an alternative WordPress theme until a patched version is available

Patch Information

Users should monitor the Patchstack WordPress Vulnerability Report for updates regarding patch availability. Contact Elated-Themes directly for information about a security update addressing this vulnerability.

Until an official patch is released, site administrators should implement the workarounds listed below and consider temporarily disabling the theme to reduce exposure.

Workarounds

Deploy a Web Application Firewall with rules to block path traversal sequences in all request parameters
Restrict PHP file inclusion paths using the open_basedir directive in PHP configuration
Implement server-level access controls to prevent the web server from reading sensitive system files
Use a security plugin such as Wordfence or Sucuri to add additional protection layers against LFI attacks

bash

# PHP configuration hardening (add to php.ini or .htaccess)
# Restrict PHP file access to the WordPress directory only
php_admin_value open_basedir /var/www/html/wordpress:/tmp

# Disable dangerous PHP functions
disable_functions = exec,passthru,shell_exec,system,proc_open,popen