CVE-2013-2010 in W3 Total Cache Plugin
Summary
by MITRE
WordPress W3 Total Cache Plugin 0.9.2.8 has a Remote PHP Code Execution Vulnerability
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Analysis
by VulDB Data Team • 03/24/2025
The WordPress W3 Total Cache plugin version 0.9.2.8 contains a critical remote code execution vulnerability that allows attackers to execute arbitrary PHP code on vulnerable systems. This vulnerability stems from improper input validation within the plugin's functionality, specifically affecting the cache configuration and management features. The flaw exists in how the plugin processes user-supplied data during cache operations, creating an avenue for malicious actors to inject and execute harmful code remotely without authentication. The vulnerability impacts WordPress installations that have this specific version of the W3 Total Cache plugin active and properly configured. According to CWE-94, this represents a classic case of improper input validation leading to code execution, where the plugin fails to properly sanitize or escape user-provided parameters before incorporating them into PHP execution contexts. The attack surface is particularly concerning as it affects the core caching functionality that many WordPress sites rely upon for performance optimization.
The technical exploitation of this vulnerability occurs through crafted requests that manipulate the plugin's cache management parameters. Attackers can leverage this flaw by sending specially crafted HTTP requests that include malicious PHP code within cache configuration values or file paths. The vulnerability typically manifests when the plugin processes user input in cache-related operations such as cache file generation, configuration updates, or administrative commands. The code execution occurs because the plugin directly incorporates user-supplied data into PHP execution contexts without proper sanitization or escaping mechanisms. This type of vulnerability aligns with ATT&CK technique T1059.007, which covers the execution of code through PHP-based attacks, and represents a significant risk to WordPress infrastructure security. The vulnerability is particularly dangerous because it allows attackers to gain complete control over the affected WordPress installation, potentially leading to data breaches, site defacement, or further network compromise.
The operational impact of this vulnerability extends beyond simple code execution to encompass complete system compromise and data exfiltration capabilities. Once exploited, attackers can modify website content, steal sensitive user data, install backdoors, or use the compromised system as a launch point for further attacks within the network. The vulnerability affects not only the WordPress site itself but also any underlying infrastructure that relies on the compromised system for operations. Organizations running vulnerable versions face potential regulatory compliance violations, reputational damage, and significant financial losses due to data breaches and service disruptions. The impact is amplified because many WordPress installations are hosted on shared servers or cloud environments where a single compromised site can affect other hosted applications. Security professionals should note that this vulnerability requires immediate patching as it provides attackers with persistent access to the target system and can be exploited without requiring user interaction or authentication.
Mitigation strategies for this vulnerability include immediate patching to version 0.9.2.9 or later, which addresses the input validation issues in the cache management functions. Organizations should also implement network-level protections such as web application firewalls that can detect and block malicious requests targeting the specific plugin endpoints. Regular security audits and vulnerability scanning should be conducted to identify other potentially vulnerable components within the WordPress ecosystem. Additionally, implementing proper input validation and output encoding practices in all web applications can prevent similar vulnerabilities from occurring. System administrators should monitor for unusual cache file creation or modification patterns that might indicate exploitation attempts. The vulnerability also underscores the importance of keeping all WordPress plugins and themes updated to their latest versions, as outdated components represent common attack vectors for adversaries targeting WordPress infrastructure. Organizations should consider implementing principle of least privilege access controls and regularly review plugin permissions to minimize potential damage from successful exploitation attempts.