CVE-2024-31118: SP Project & Document Manager Auth Bypass

CVE-2024-31118 Overview

CVE-2024-31118 is a Missing Authorization vulnerability affecting the Smartypants SP Project & Document Manager WordPress plugin. This security flaw allows attackers to exploit incorrectly configured access control security levels, potentially leading to broken access control conditions that can be chained with cross-site scripting (XSS) attacks. The vulnerability stems from inadequate authorization checks within the plugin, enabling authenticated users with low privileges to access or modify resources beyond their intended permissions.

Critical Impact

Authenticated attackers can bypass access controls and potentially escalate to XSS attacks, compromising data confidentiality, integrity, and availability across affected WordPress installations.

Affected Products

• SP Project & Document Manager plugin versions through 4.70
• WordPress installations running vulnerable versions of SP Project & Document Manager
• Sites using sp-client-document-manager plugin without authorization hardening

Discovery Timeline

• 2026-02-17 - CVE CVE-2024-31118 published to NVD
• 2026-02-18 - Last updated in NVD database

Technical Details for CVE-2024-31118

Vulnerability Analysis

This vulnerability is classified under CWE-862 (Missing Authorization), indicating that the SP Project & Document Manager plugin fails to perform proper authorization checks before allowing access to protected functionality. The flaw resides in the plugin's access control implementation, where security levels are incorrectly configured or not enforced at all.

The vulnerability requires network access and low-level authentication (such as a subscriber or contributor role in WordPress). An attacker who can authenticate to the WordPress site can leverage this broken access control to interact with project and document management features they should not have access to. Additionally, Patchstack reports that this vulnerability can be chained to achieve cross-site scripting, increasing the potential impact on affected systems.

The scope of this vulnerability is changed, meaning a successful exploit could affect resources beyond the vulnerable component itself, potentially impacting other areas of the WordPress installation.

Root Cause

The root cause of CVE-2024-31118 lies in the absence of proper authorization validation within the SP Project & Document Manager plugin. The plugin fails to verify whether authenticated users have the appropriate permissions before granting access to sensitive document management functions. This missing authorization check allows users with minimal privileges to access functionality intended for higher-privileged users such as administrators or project managers.

Attack Vector

The attack vector for this vulnerability is network-based, requiring an authenticated user session. An attacker would need to:

1. Obtain low-privileged credentials on a WordPress site running the vulnerable plugin
2. Access plugin endpoints or AJAX handlers that lack proper authorization checks
3. Interact with document or project management features beyond their assigned role
4. Potentially inject malicious scripts through the broken access control, leading to stored XSS

The vulnerability mechanism involves bypassing role-based access controls through direct requests to plugin functions that do not validate user capabilities. Attackers can manipulate project or document settings, access sensitive files, or inject content that executes in the context of other users' browsers.

For technical details on the exploitation mechanism, see the Patchstack WordPress Vulnerability Report.

Detection Methods for CVE-2024-31118

Indicators of Compromise

• Unexpected access to document management features by low-privileged user accounts
• Suspicious AJAX requests to SP Project & Document Manager plugin endpoints from subscriber or contributor accounts
• Stored XSS payloads appearing in project or document metadata fields
• Anomalous file access patterns within the WordPress wp-content/uploads directory

Detection Strategies

• Monitor WordPress user activity logs for access attempts to SP Project & Document Manager administrative functions by non-privileged users
• Implement web application firewall (WAF) rules to detect and block unauthorized access patterns targeting plugin endpoints
• Scan for stored XSS payloads in database tables associated with the SP Project & Document Manager plugin
• Review WordPress audit logs for capability elevation attempts or unauthorized content modifications

Monitoring Recommendations

• Enable detailed logging for all SP Project & Document Manager plugin interactions
• Configure alerting for failed authorization checks within WordPress security plugins
• Deploy real-time monitoring for JavaScript injection attempts in project and document fields
• Regularly audit user roles and capabilities assigned within the WordPress installation

How to Mitigate CVE-2024-31118

Immediate Actions Required

• Update SP Project & Document Manager plugin to a version newer than 4.70 that includes the security fix
• Audit existing user accounts and remove unnecessary subscriber or contributor access
• Review project and document content for signs of XSS payload injection
• Implement additional access control measures using WordPress security plugins

Patch Information

Organizations using SP Project & Document Manager versions through 4.70 should immediately check for available updates from the plugin vendor. The vulnerability was reported by Patchstack, and organizations should monitor the Patchstack vulnerability database for patch availability and additional remediation guidance.

Workarounds

• Restrict access to the WordPress admin panel and plugin functions to trusted IP addresses only
• Implement capability checks at the theme or custom plugin level to add an additional authorization layer
• Temporarily disable the SP Project & Document Manager plugin if it is not critical to operations
• Use a web application firewall to filter malicious requests targeting the vulnerable plugin endpoints

# WordPress capability restriction example
# Add to theme's functions.php to restrict plugin access
# Note: This is a temporary workaround - apply vendor patch when available

# Disable plugin for non-admin users temporarily
add_action('admin_init', function() {
    if (!current_user_can('manage_options')) {
        // Block access to SP Project & Document Manager
        remove_menu_page('sp-client-document-manager');
    }
});