CVE-2026-9662: Recover Exit WooCommerce Path Traversal

CVE-2026-9662 Overview

CVE-2026-9662 is a Local File Inclusion (LFI) vulnerability in the Recover Exit For WooCommerce plugin for WordPress, affecting all versions up to and including 1.0.3. The flaw resides in the recover_exit() function, which passes the user-controlled tpf POST parameter into a PHP include() statement without sufficient validation or sanitization. Unauthenticated attackers can perform path traversal to include arbitrary local PHP files on the server. Successful exploitation enables sensitive information exposure and, in certain deployment chains where attacker-controlled content can be written to the filesystem, remote code execution.

Critical Impact

Unauthenticated attackers can traverse the filesystem and include arbitrary PHP files via the tpf POST parameter, leading to information disclosure or code execution.

Affected Products

• Recover Exit For WooCommerce plugin for WordPress, versions ≤ 1.0.3
• WordPress sites running WooCommerce with the affected plugin installed
• All deployment chains where local PHP files or uploadable content can be referenced via path traversal

Discovery Timeline

• 2026-06-09 - CVE-2026-9662 published to NVD
• 2026-06-09 - Last updated in NVD database

Technical Details for CVE-2026-9662

Vulnerability Analysis

The vulnerability is classified under [CWE-98] Improper Control of Filename for Include/Require Statement in PHP Program (PHP Remote File Inclusion). The recover_exit() function in recover_exit_main.php reads the tpf POST parameter directly from user input and concatenates it into a PHP include() path. No allowlist, normalization, or directory restriction is enforced before the inclusion occurs.

Because the affected code path is reachable via an AJAX or admin-post handler registered without authentication, attackers do not need any account on the target site. Attackers supply traversal sequences (../) in the tpf value to escape the intended plugin directory and include any readable PHP file on the host. Once a target file is included, its PHP code executes within the WordPress process context, exposing configuration secrets such as wp-config.php constants and database credentials.

In environments that allow attacker-controlled content to be written to predictable locations — for example, uploaded files, log files, or session files — the LFI can be chained into remote code execution by including a file containing attacker PHP payloads.

Root Cause

The root cause is insufficient input validation on the tpf POST parameter before it is supplied to PHP's include() construct. The plugin does not constrain the included path to a fixed directory, does not validate against an allowlist of expected filenames, and does not strip traversal characters. Relevant sinks are referenced at recover_exit_main.php lines 41 and 42 and the handler registration in recoverexit_woocommerce.php line 52.

Attack Vector

The attack vector is network-based and requires no authentication or user interaction. An attacker issues an HTTP POST request to the vulnerable WordPress endpoint with a crafted tpf parameter containing path traversal sequences. The plugin then resolves and includes the referenced PHP file, returning its output or executing its code. See the WordPress Plugin Code Reference and the Wordfence Vulnerability Report for the vulnerable code locations and analysis.

Detection Methods for CVE-2026-9662

Indicators of Compromise

• POST requests to WordPress endpoints containing a tpf parameter with traversal sequences such as ../, ..%2f, or absolute paths like /etc/passwd.
• Web server access logs showing repeated POSTs to plugin handlers from recoverexit-for-woocommerce referencing unexpected filenames.
• Unexpected PHP errors referencing include() failures for paths outside the plugin directory in error_log or PHP-FPM logs.
• Outbound connections or new processes spawned by the php-fpm or web server user immediately after suspicious POSTs to the plugin.

Detection Strategies

• Inspect HTTP request bodies for the tpf POST parameter and alert when its value contains .., null bytes, or absolute paths.
• Correlate WordPress wp-content/plugins/recoverexit-for-woocommerce/ request patterns with subsequent reads of sensitive files such as wp-config.php.
• Apply WAF rules that block path traversal payloads on requests targeting the affected plugin endpoints.

Monitoring Recommendations

• Enable verbose PHP error logging and forward logs to a centralized SIEM for traversal pattern matching.
• Monitor file integrity of WordPress core files and the wp-content/uploads directory for unexpected PHP content.
• Track outbound network activity from web servers hosting WooCommerce to identify post-exploitation callbacks.

How to Mitigate CVE-2026-9662

Immediate Actions Required

• Deactivate and remove the Recover Exit For WooCommerce plugin from all WordPress installations until a patched release is available.
• Audit web server and PHP error logs for prior exploitation attempts referencing the tpf parameter and traversal sequences.
• Rotate any secrets stored in wp-config.php, including database credentials, authentication keys, and salts, if compromise is suspected.
• Restrict access to WordPress admin and AJAX endpoints by IP allowlisting where operationally feasible.

Patch Information

As of the NVD publication date (2026-06-09), no fixed version beyond 1.0.3 is referenced in the available advisories. Administrators should monitor the WordPress plugin repository and the Wordfence Vulnerability Report for an updated release that validates the tpf parameter against an allowlist before inclusion.

Workarounds

• Deploy a WAF rule blocking POST requests to the plugin that contain .., %2e%2e, or null byte sequences in the tpf parameter.
• Set open_basedir in php.ini to restrict PHP file access to the WordPress document root, limiting traversal scope.
• Disable PHP execution in wp-content/uploads using web server configuration to reduce LFI-to-RCE chaining risk.

# Example Apache configuration to block PHP execution in uploads and deny traversal payloads
<Directory "/var/www/html/wp-content/uploads">
    php_flag engine off
    <FilesMatch "\.php$">
        Require all denied
    </FilesMatch>
</Directory>

# Example ModSecurity rule to block traversal in the tpf parameter
SecRule ARGS:tpf "@rx (\.\./|\.\.\\|%2e%2e)" \
    "id:1009662,phase:2,deny,status:403,msg:'CVE-2026-9662 LFI attempt via tpf parameter'"