CVE-2025-62881: WP-Lister Lite Auth Bypass Vulnerability

CVE-2025-62881 Overview

CVE-2025-62881 is a missing authorization vulnerability in the WP Lab WP-Lister Lite for eBay WordPress plugin. The flaw affects all versions up to and including 3.8.3. It stems from incorrectly configured access control security levels, allowing authenticated users with low privileges to perform actions that should require elevated permissions. The vulnerability is categorized under [CWE-862] Missing Authorization and impacts the integrity of the affected WordPress installation.

Critical Impact
Authenticated attackers with minimal privileges can bypass access control checks in WP-Lister Lite for eBay to perform unauthorized actions against the plugin's functionality.

Affected Products

WP Lab WP-Lister Lite for eBay plugin for WordPress
All versions from n/a through 3.8.3
WordPress sites with the vulnerable plugin installed and active

Discovery Timeline

2025-10-27 - CVE CVE-2025-62881 published to NVD
2026-06-17 - Last updated in NVD database

Technical Details for CVE-2025-62881

Vulnerability Analysis

The vulnerability resides in the WP-Lister Lite for eBay plugin, which integrates WordPress sites with eBay listings. The plugin fails to properly verify user authorization before executing sensitive operations. This broken access control weakness allows authenticated users to invoke plugin functions without the required capability checks.

The attack requires network access and low privileges but no user interaction. Only integrity is affected, meaning attackers can modify plugin-managed data or configuration without authorization. Confidentiality and availability remain unaffected based on the published scoring vector.

Root Cause

The root cause is the absence of proper authorization checks within one or more plugin request handlers. WordPress plugins typically enforce access control using current_user_can() capability checks or nonce verification with capability validation. In WP-Lister Lite for eBay versions through 3.8.3, one or more action endpoints omit these checks, permitting subscriber-level or contributor-level accounts to trigger administrative or listing-management functionality.

Attack Vector

An authenticated attacker sends a crafted HTTP request to a vulnerable plugin endpoint on a WordPress site running WP-Lister Lite for eBay. Because the handler does not enforce role-based restrictions, the request executes with the effective privileges of the plugin rather than the requesting user. The attack requires only a valid low-privileged account, which is common on sites permitting user registration.

Refer to the Patchstack WordPress Plugin Vulnerability advisory for additional technical context.

Detection Methods for CVE-2025-62881

Indicators of Compromise

Unexpected changes to eBay listing configurations, product metadata, or plugin settings within WordPress
HTTP POST requests to WP-Lister Lite for eBay action handlers originating from low-privileged accounts
WordPress audit log entries showing subscriber or contributor accounts triggering plugin actions typically reserved for administrators

Detection Strategies

Inventory WordPress installations to identify sites running WP-Lister Lite for eBay at version 3.8.3 or earlier
Monitor web server access logs for admin-ajax.php and admin-post.php requests referencing WP-Lister action parameters from non-administrator sessions
Correlate WordPress user role data with plugin action invocations to identify authorization mismatches

Monitoring Recommendations

Enable WordPress activity logging to capture plugin action invocations with associated user roles and IP addresses
Alert on new user registrations followed by requests to plugin management endpoints within short time windows
Review outbound eBay API activity for unexpected listing modifications that may indicate abuse

How to Mitigate CVE-2025-62881

Immediate Actions Required

Update WP-Lister Lite for eBay to a version later than 3.8.3 once the vendor publishes a patched release
Restrict new user registrations on WordPress sites where the plugin is active until patched
Audit existing user accounts and remove unnecessary low-privileged accounts that could be leveraged for exploitation

Patch Information

At the time of publication, the vulnerability affects WP-Lister Lite for eBay versions through 3.8.3. Site administrators should monitor the Patchstack advisory and the WordPress plugin repository for a fixed release and apply it as soon as it becomes available.

Workarounds

Deactivate the WP-Lister Lite for eBay plugin until a patched version is available if eBay integration is not business-critical
Deploy a web application firewall rule to block requests to WP-Lister action endpoints from non-administrator sessions
Enforce strong role separation and disable open user registration on public WordPress sites using the plugin

bash

# Configuration example: disable open registration in wp-config.php
define( 'DISALLOW_FILE_MODS', true );
# Or via WordPress admin: Settings > General > uncheck "Anyone can register"