CVE-2025-59010: Permalink Manager Lite Data Exposure Flaw

CVE-2025-59010 Overview

CVE-2025-59010 is a Sensitive Data Exposure vulnerability affecting the WordPress Permalink Manager Lite plugin developed by Maciej Bis. The vulnerability stems from improper handling of sensitive information that gets inserted into sent data, allowing unauthenticated attackers to retrieve embedded sensitive data from affected WordPress installations.

This vulnerability is classified under CWE-201 (Insertion of Sensitive Information Into Sent Data), indicating that the plugin improperly exposes sensitive information in responses or data transmissions that should otherwise be protected.

Critical Impact

Unauthenticated attackers can exploit this vulnerability remotely to extract sensitive information from WordPress sites running vulnerable versions of Permalink Manager Lite, potentially compromising user data, site configuration details, or other confidential information.

Affected Products

• Permalink Manager Lite plugin version 2.5.1.3 and earlier
• WordPress installations using the vulnerable Permalink Manager Lite plugin

Discovery Timeline

• 2025-09-26 - CVE-2025-59010 published to NVD
• 2026-04-23 - Last updated in NVD database

Technical Details for CVE-2025-59010

Vulnerability Analysis

This vulnerability affects the Permalink Manager Lite WordPress plugin, which is commonly used to manage custom permalinks, redirects, and URL structures on WordPress sites. The core issue lies in how the plugin handles and transmits data, inadvertently including sensitive information in responses that are accessible to unauthenticated users.

The vulnerability can be exploited remotely over the network without requiring any authentication or user interaction. An attacker can leverage this flaw to extract confidential data that the plugin exposes through its data handling mechanisms. The impact is primarily on confidentiality, as attackers can retrieve sensitive information but cannot modify data or disrupt service availability.

Root Cause

The root cause of CVE-2025-59010 is the insertion of sensitive information into data that is sent to clients or external parties. The Permalink Manager Lite plugin fails to properly sanitize or filter sensitive information before including it in responses, violating the principle of least privilege for data exposure. This represents a fundamental flaw in how the plugin manages data boundaries between internal processing and external output.

Attack Vector

The attack vector for this vulnerability is network-based, allowing remote exploitation. An attacker targeting a WordPress site with the vulnerable Permalink Manager Lite plugin can:

1. Identify WordPress installations using Permalink Manager Lite through plugin enumeration techniques
2. Craft requests to endpoints that trigger the sensitive data exposure
3. Extract the embedded sensitive information from the plugin's responses
4. Leverage the exposed data for further attacks or unauthorized access

The exploitation requires no authentication (PR:N), no user interaction (UI:N), and has low attack complexity (AC:L), making it accessible to attackers with basic skills. For detailed technical analysis, refer to the Patchstack Vulnerability Report.

Detection Methods for CVE-2025-59010

Indicators of Compromise

• Unusual or repeated requests to Permalink Manager Lite plugin endpoints
• Unexpected data in HTTP responses containing configuration or user information
• Anomalous traffic patterns targeting WordPress plugin directories
• Evidence of enumeration attempts against /wp-content/plugins/permalink-manager/ paths

Detection Strategies

• Monitor web server access logs for suspicious requests targeting the Permalink Manager Lite plugin
• Implement Web Application Firewall (WAF) rules to detect and block exploitation attempts
• Use WordPress security plugins to audit plugin behavior and detect unauthorized data exposure
• Deploy network intrusion detection systems (IDS) to identify data exfiltration patterns

Monitoring Recommendations

• Enable verbose logging for WordPress and the Permalink Manager Lite plugin
• Configure alerts for unusual response sizes or data patterns from plugin endpoints
• Regularly audit outbound data from WordPress installations for sensitive information leakage
• Implement file integrity monitoring on the permalink-manager plugin directory

How to Mitigate CVE-2025-59010

Immediate Actions Required

• Update Permalink Manager Lite to a version newer than 2.5.1.3 when a patched version becomes available
• Review WordPress site for signs of data exposure or unauthorized access
• Temporarily disable the Permalink Manager Lite plugin if updates are not available
• Implement WAF rules to restrict access to vulnerable plugin endpoints

Patch Information

Users should monitor the WordPress plugin repository and the vendor's official channels for security updates addressing this vulnerability. The Patchstack Vulnerability Report provides additional details on the vulnerability and remediation guidance.

Workarounds

• Restrict access to the WordPress admin and plugin directories using .htaccess rules or server configuration
• Implement IP-based access controls to limit exposure of WordPress backend functionality
• Use a Web Application Firewall to filter malicious requests targeting the plugin
• Consider using an alternative permalink management solution until the plugin is patched

# Example .htaccess rule to restrict access to plugin directory
<Directory /var/www/html/wp-content/plugins/permalink-manager>
    Order Deny,Allow
    Deny from all
    Allow from 192.168.1.0/24
</Directory>