CVE-2025-66141: Scroller Plugin Auth Bypass Vulnerability

CVE-2025-66141 Overview

CVE-2025-66141 is a Missing Authorization vulnerability (CWE-862) in the merkulove Scroller WordPress plugin that allows attackers to exploit incorrectly configured access control security levels. This Broken Access Control vulnerability affects the Scroller plugin through version 2.0.2, enabling unauthorized users to potentially access functionality or data that should be restricted to authenticated or privileged users.

Critical Impact

Unauthorized access to plugin functionality due to missing authorization checks, potentially allowing attackers to modify settings or access restricted features without proper authentication.

Affected Products

• merkulove Scroller WordPress Plugin versions through 2.0.2
• WordPress installations using the vulnerable Scroller plugin

Discovery Timeline

• 2026-01-22 - CVE CVE-2025-66141 published to NVD
• 2026-01-22 - Last updated in NVD database

Technical Details for CVE-2025-66141

Vulnerability Analysis

This vulnerability stems from a Missing Authorization weakness (CWE-862) in the Scroller WordPress plugin developed by merkulove. The plugin fails to properly verify user permissions before allowing access to certain functionality, creating a Broken Access Control condition that can be exploited by malicious actors.

WordPress plugins that handle user interactions or administrative functions must implement proper capability checks to ensure that only authorized users can execute sensitive operations. When these authorization checks are absent or improperly implemented, attackers can bypass intended access restrictions and interact with plugin features they should not have access to.

The vulnerability allows exploitation of incorrectly configured access control security levels, which typically manifests as unauthorized users being able to invoke AJAX handlers, REST API endpoints, or administrative functions without the requisite privileges.

Root Cause

The root cause of CVE-2025-66141 is the absence of proper authorization checks within the Scroller plugin's code paths. WordPress provides capability checking functions such as current_user_can() that plugins must use to verify user permissions before executing privileged operations. The vulnerable versions of Scroller fail to implement these checks adequately, allowing users with insufficient privileges to access restricted functionality.

Attack Vector

The attack vector for this Missing Authorization vulnerability typically involves an authenticated WordPress user with minimal privileges (such as a subscriber role) or potentially even unauthenticated users, depending on the specific endpoint affected. Attackers can craft requests to vulnerable plugin endpoints that lack authorization verification, allowing them to:

1. Access administrative plugin settings or configurations
2. Modify plugin behavior without proper permissions
3. Potentially escalate privileges within the WordPress installation
4. Access or manipulate data that should be restricted to administrators

The exploitation does not require specialized tools and can be performed using standard HTTP requests to the vulnerable plugin endpoints.

Detection Methods for CVE-2025-66141

Indicators of Compromise

• Unexpected changes to Scroller plugin settings by non-administrator users
• Unusual AJAX or REST API requests to Scroller plugin endpoints from low-privileged accounts
• WordPress audit logs showing plugin configuration modifications by unauthorized users
• Anomalous POST requests targeting Scroller plugin action hooks

Detection Strategies

• Review WordPress access logs for requests to Scroller plugin endpoints from unauthorized user sessions
• Implement WordPress security plugins that monitor for Broken Access Control attempts
• Enable comprehensive logging of plugin administrative actions and review for anomalies
• Deploy web application firewalls (WAF) with rules to detect authorization bypass attempts

Monitoring Recommendations

• Configure real-time alerting for modifications to plugin settings by non-administrator accounts
• Monitor WordPress user activity logs for privilege escalation patterns
• Implement file integrity monitoring on WordPress plugin directories
• Review audit trails for any unauthorized access to Scroller plugin functionality

How to Mitigate CVE-2025-66141

Immediate Actions Required

• Update the Scroller plugin to a patched version when available from the vendor
• Temporarily deactivate the Scroller plugin if it is not critical to site functionality
• Review WordPress user accounts and remove unnecessary privileges
• Implement additional access control measures at the web server or WAF level
• Audit recent plugin activity for signs of exploitation

Patch Information

Consult the Patchstack WordPress Vulnerability Details for the latest patch information and remediation guidance. Monitor the official WordPress plugin repository for updates to the Scroller plugin that address this vulnerability.

Workarounds

• Disable the Scroller plugin until a security patch is released
• Implement server-level access restrictions to limit plugin endpoint access to trusted IP addresses
• Use a WordPress security plugin to add additional authorization layers
• Restrict WordPress user registration and minimize the number of accounts with any level of access
• Consider implementing a Web Application Firewall with virtual patching capabilities to block exploitation attempts