CVE-2025-23534 Overview
CVE-2025-23534 is a missing authorization vulnerability in the WPLingo WordPress plugin by Mark Winiarski. The flaw affects all versions up to and including 1.1.2. The plugin fails to enforce proper access control checks, allowing authenticated users with low privileges to trigger actions they should not be able to invoke. Public advisories describe the resulting impact as arbitrary content deletion, which affects site availability and data integrity.
Critical Impact
Authenticated attackers with minimal privileges can exploit incorrectly configured access controls in WPLingo to delete arbitrary content, disrupting WordPress site availability.
Affected Products
- WPLingo plugin for WordPress
- All versions from n/a through 1.1.2
- WordPress sites with WPLingo installed and activated
Discovery Timeline
- 2025-02-14 - CVE-2025-23534 published to the National Vulnerability Database (NVD)
- 2026-06-17 - Last updated in NVD database
Technical Details for CVE-2025-23534
Vulnerability Analysis
The vulnerability is classified as Missing Authorization [CWE-862]. The WPLingo plugin exposes functionality without validating whether the requesting user holds the required capability. Any authenticated user session, including low-privileged roles such as subscriber, can reach the vulnerable action handler. The Patchstack advisory categorizes the resulting behavior as arbitrary content deletion, meaning attackers can remove content that would normally require administrator or editor privileges.
Root Cause
The plugin's request handlers omit the WordPress current_user_can() capability check before performing destructive operations. WordPress relies on plugin developers to enforce role-based authorization at each privileged action. When these checks are absent, the platform's built-in role separation collapses. The nonce or authentication check alone does not constitute authorization, since any logged-in user can request a valid nonce.
Attack Vector
Exploitation requires network access to the target WordPress site and a valid authenticated session with low privileges. The attacker sends a crafted HTTP request to the vulnerable WPLingo endpoint, invoking the content deletion action directly. No user interaction from a victim is required. Full technical details are available in the Patchstack WPLingo advisory.
No verified public proof-of-concept code is available at this time. The vulnerability mechanism follows the well-documented pattern of unauthenticated or under-authenticated AJAX and REST action handlers in WordPress plugins.
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Stop Identity AttacksDetection Methods for CVE-2025-23534
Indicators of Compromise
- Unexpected deletion of posts, pages, translations, or other WPLingo-managed content without corresponding administrator activity in the audit log.
- HTTP POST requests to WPLingo AJAX endpoints (admin-ajax.php with WPLingo-specific action parameters) originating from low-privilege user sessions.
- Sudden spikes in wp_delete_post or similar database delete operations correlated with non-administrator authenticated sessions.
Detection Strategies
- Inventory WordPress installations and flag any site running WPLingo version 1.1.2 or earlier.
- Monitor web server access logs for authenticated requests to WPLingo action handlers issued by users whose role does not include content management capabilities.
- Correlate WordPress activity logs with user role data to identify privilege boundary violations.
Monitoring Recommendations
- Deploy a WordPress activity logging plugin that records content deletion events with the acting user, source IP, and user agent.
- Forward web server and WordPress application logs to a centralized SIEM for retention and correlation.
- Alert on any deletion action performed by a subscriber, contributor, or newly created account within a short window of registration.
How to Mitigate CVE-2025-23534
Immediate Actions Required
- Deactivate the WPLingo plugin on all affected WordPress sites until a patched version is confirmed installed.
- Audit user accounts and remove or disable untrusted low-privilege accounts, particularly self-registered subscribers.
- Review recent content changes and restore any items deleted through this vulnerability from backups.
Patch Information
At the time of the NVD entry, no fixed version above 1.1.2 is listed. Administrators should consult the Patchstack WPLingo advisory and the plugin's WordPress.org page for the latest release information. Apply any vendor patch immediately upon availability.
Workarounds
- Disable user registration or restrict the default new-user role to prevent untrusted accounts from obtaining an authenticated session.
- Use a Web Application Firewall (WAF) rule to block requests to WPLingo AJAX or REST action handlers from non-administrator sessions.
- Enforce least privilege on all WordPress accounts and remove unused editor or author accounts that could be compromised via credential reuse.
# Example WP-CLI commands to reduce exposure
wp plugin deactivate wplingo
wp option update users_can_register 0
wp option update default_role subscriber
wp user list --role=subscriber --field=ID | xargs -I {} wp user get {} --field=user_registered
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
