CVE-2026-25455: WooCommerce Product Slider Auth Bypass

CVE-2026-25455 Overview

CVE-2026-25455 is a Missing Authorization vulnerability (CWE-862) affecting the PickPlugins Product Slider for WooCommerce WordPress plugin. This broken access control flaw allows attackers to exploit incorrectly configured access control security levels, potentially enabling unauthorized modification of plugin settings or data. The vulnerability stems from missing capability checks on sensitive plugin functionality.

Critical Impact

Authenticated attackers with low-level privileges can bypass authorization controls to perform unauthorized actions that should be restricted to administrators, potentially compromising the integrity of WooCommerce product displays.

Affected Products

• PickPlugins Product Slider for WooCommerce plugin versions through 1.13.60
• WordPress installations with the woocommerce-products-slider plugin enabled
• WooCommerce-powered e-commerce sites using the affected slider plugin

Discovery Timeline

• 2026-03-25 - CVE CVE-2026-25455 published to NVD
• 2026-03-26 - Last updated in NVD database

Technical Details for CVE-2026-25455

Vulnerability Analysis

This vulnerability is classified as Missing Authorization (CWE-862), a common weakness in WordPress plugins where sensitive functions lack proper permission verification. In the case of the Product Slider for WooCommerce plugin, certain administrative operations can be accessed by authenticated users without verifying they have the appropriate capabilities.

The attack requires network access and low-privilege authentication (such as a subscriber or customer account), but no user interaction is needed for exploitation. While the vulnerability does not enable data exfiltration, it allows unauthorized modification of plugin configurations and slider content, compromising the integrity of the affected WordPress installation.

Root Cause

The root cause is the absence of proper authorization checks (capability verification) in one or more AJAX handlers or administrative functions within the plugin. WordPress plugins should implement current_user_can() checks to verify that the authenticated user has appropriate permissions before executing sensitive operations. The affected versions of Product Slider for WooCommerce fail to implement these checks consistently.

Attack Vector

The attack is conducted over the network by an authenticated user with minimal privileges. An attacker would need to:

1. Obtain a low-privilege WordPress account (subscriber, customer, or contributor role)
2. Identify the vulnerable AJAX action or endpoint that lacks authorization
3. Send crafted requests to the vulnerable endpoint to modify slider configurations or settings
4. Exploit the broken access control to perform administrative actions without proper authorization

The vulnerability mechanism involves making authenticated requests to plugin endpoints that process sensitive operations without verifying the user's role or capabilities. For detailed technical analysis, refer to the Patchstack Vulnerability Report.

Detection Methods for CVE-2026-25455

Indicators of Compromise

• Unexpected modifications to product slider configurations by non-administrator users
• Audit log entries showing AJAX requests to woocommerce-products-slider endpoints from low-privilege accounts
• Changes to slider display settings or shortcode parameters without corresponding administrator activity

Detection Strategies

• Monitor WordPress audit logs for unauthorized access to plugin administrative functions
• Implement file integrity monitoring on plugin configuration files and database options
• Review user activity logs for subscriber or customer accounts accessing administrative endpoints
• Deploy web application firewall (WAF) rules to detect anomalous requests to plugin AJAX handlers

Monitoring Recommendations

• Enable comprehensive WordPress audit logging with plugins like WP Activity Log
• Monitor database changes to options tables related to woocommerce-products-slider
• Set up alerts for configuration changes outside of normal administrative workflows
• Review server access logs for POST requests to admin-ajax.php with suspicious action parameters

How to Mitigate CVE-2026-25455

Immediate Actions Required

• Update the Product Slider for WooCommerce plugin to the latest patched version immediately
• Audit user accounts for any unauthorized privilege escalation or suspicious activity
• Review and remove unnecessary user accounts, especially those with authentication credentials
• Implement a WordPress security plugin that enforces additional access controls

Patch Information

Site administrators should update the Product Slider for WooCommerce plugin beyond version 1.13.60 to receive the security fix. The patch is expected to add proper capability checks to all administrative functions and AJAX handlers. Check the Patchstack Vulnerability Report for the latest patch status and remediation guidance.

Workarounds

• Temporarily disable the Product Slider for WooCommerce plugin until a patch can be applied
• Implement WAF rules to block unauthorized AJAX requests to the plugin's endpoints
• Restrict user registration on the WordPress site to minimize authenticated attack surface
• Use a security plugin to add additional authorization layers to plugin functionality

# Temporarily disable the vulnerable plugin via WP-CLI
wp plugin deactivate woocommerce-products-slider

# Update the plugin when a patched version is available
wp plugin update woocommerce-products-slider

# Verify the installed version after update
wp plugin list --name=woocommerce-products-slider --fields=name,version,status