CVE-2024-37266 Overview
CVE-2024-37266 is a path traversal vulnerability in the Themeum Tutor LMS plugin for WordPress. The flaw affects all versions up to and including 2.7.1. It is categorized under [CWE-22] (Improper Limitation of a Pathname to a Restricted Directory).
An authenticated attacker with high privileges can manipulate file path inputs to access files outside the intended directory. Successful exploitation impacts confidentiality, integrity, and availability of the underlying WordPress installation. Tutor LMS is a widely deployed learning management system plugin used to build and sell online courses through WordPress sites.
Critical Impact
Authenticated attackers can traverse the filesystem to read, modify, or delete arbitrary files on the WordPress host, enabling potential site compromise.
Affected Products
- Themeum Tutor LMS for WordPress: all versions up to and including 2.7.1
- WordPress sites running the vulnerable plugin
- Installations exposing plugin endpoints to authenticated users
Discovery Timeline
- 2024-07-09 - CVE-2024-37266 published to the National Vulnerability Database (NVD)
- 2026-06-17 - Last updated in NVD database
Technical Details for CVE-2024-37266
Vulnerability Analysis
The vulnerability stems from insufficient validation of user-supplied path parameters within Tutor LMS plugin endpoints. When the plugin processes file-related requests, it fails to sanitize traversal sequences such as ../ before constructing filesystem paths. This allows an attacker to escape the plugin's intended working directory.
The attack requires network access and valid authentication with elevated privileges. No user interaction is needed once the attacker holds a qualifying account. Because WordPress plugins execute in the context of the web server user, traversal operations can reach sensitive files including wp-config.php, which contains database credentials and secret keys.
Exploitation grants read, write, or delete access depending on which vulnerable code path is triggered. Attackers can chain the flaw with follow-on actions such as staging web shells or exfiltrating configuration data.
Root Cause
The root cause is missing or inadequate canonicalization of file path input. The plugin concatenates attacker-controlled strings into filesystem paths without enforcing an allow-list of directories or resolving symbolic sequences. WordPress helper functions such as realpath() and wp_normalize_path() are not applied to reject traversal payloads before file operations execute.
Attack Vector
The attack vector is network-based via HTTP or HTTPS requests to the WordPress site. An authenticated user with sufficient permissions submits a crafted request containing directory traversal sequences in a path parameter. The vulnerable handler resolves the path and performs a filesystem operation outside the plugin's expected scope.
Technical details are documented in the Patchstack Vulnerability Advisory.
Detection Methods for CVE-2024-37266
Indicators of Compromise
- HTTP request logs containing ../ or URL-encoded equivalents such as %2e%2e%2f in Tutor LMS plugin parameters
- Unexpected read or write access to wp-config.php, .htaccess, or files outside /wp-content/plugins/tutor/
- New or modified PHP files in web-accessible directories with recent timestamps
- Authentication events for privileged Tutor LMS accounts followed by anomalous file access patterns
Detection Strategies
- Inspect web server access logs for traversal patterns targeting Tutor LMS AJAX or REST endpoints
- Enable WordPress file integrity monitoring to detect unauthorized changes across the installation
- Correlate authenticated session activity with subsequent file system events on the underlying host
- Deploy a web application firewall (WAF) ruleset that flags path traversal signatures in plugin requests
Monitoring Recommendations
- Monitor the installed Tutor LMS version and alert when hosts run 2.7.1 or earlier
- Track process activity from the web server user account for reads of sensitive configuration files
- Baseline expected file operations by the plugin and alert on deviations
How to Mitigate CVE-2024-37266
Immediate Actions Required
- Update Themeum Tutor LMS to version 2.7.2 or later on all WordPress installations
- Audit privileged Tutor LMS user accounts and remove unused or unnecessary access
- Review web server and WordPress logs for prior exploitation attempts targeting plugin endpoints
- Rotate WordPress secrets and database credentials if traversal to wp-config.php is suspected
Patch Information
Themeum released a fixed version of Tutor LMS addressing the path traversal flaw. Administrators should upgrade beyond version 2.7.1 through the WordPress plugin dashboard or by deploying the updated plugin package. Refer to the Patchstack Vulnerability Advisory for advisory details and remediation guidance.
Workarounds
- Restrict access to the WordPress admin area using IP allow-listing until the patch is applied
- Deploy WAF rules that block directory traversal sequences in requests to Tutor LMS endpoints
- Enforce least privilege for accounts with Tutor LMS instructor or administrator roles
- Disable the Tutor LMS plugin temporarily if patching cannot be completed promptly
# Example WAF rule expression to block traversal in Tutor LMS requests
SecRule REQUEST_URI "@contains /wp-admin/admin-ajax.php" \
"chain,deny,status:403,id:1004037266,msg:'Tutor LMS path traversal attempt'"
SecRule ARGS "@rx (\.\./|%2e%2e%2f|%2e%2e/)" "t:none,t:urlDecodeUni"
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
