CVE-2012-6312 in Uk-cookie
Summary
by MITRE
Cross-site scripting (XSS) vulnerability in the Video Lead Form plugin for WordPress allows remote attackers to inject arbitrary web script or HTML via the errMsg parameter in a video-lead-form action to wp-admin/admin.php.
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Analysis
by VulDB Data Team • 06/22/2025
The CVE-2012-6312 vulnerability represents a critical cross-site scripting flaw within the Video Lead Form plugin for WordPress systems. This security weakness specifically targets the administrative interface of WordPress installations, creating a pathway for malicious actors to execute arbitrary web scripts or HTML code within the context of authenticated user sessions. The vulnerability manifests through improper input validation mechanisms that fail to adequately sanitize user-supplied data before processing within the plugin's administrative functions.
The technical exploitation of this vulnerability occurs when remote attackers manipulate the errMsg parameter within the video-lead-form action directive that directs traffic to wp-admin/admin.php. This parameter serves as the primary injection vector, allowing attackers to craft malicious payloads that bypass standard security filters. The flaw resides in the plugin's failure to implement proper output encoding or input sanitization techniques, which are fundamental requirements for preventing XSS attacks. The vulnerability specifically affects WordPress installations that utilize the Video Lead Form plugin, making it particularly dangerous in environments where multiple plugins are deployed with varying security postures.
The operational impact of CVE-2012-6312 extends beyond simple script injection, as it enables attackers to potentially hijack user sessions, steal sensitive administrative credentials, or redirect users to malicious domains. When exploited successfully, this vulnerability allows threat actors to execute code within the context of privileged user sessions, potentially leading to full system compromise. The attack surface is particularly concerning because it targets the WordPress administrative interface, which typically contains sensitive configuration data and user management capabilities. This makes the vulnerability especially dangerous for website administrators who maintain high-privilege accounts within their WordPress environments.
Security professionals should note that this vulnerability aligns with CWE-79, which specifically addresses cross-site scripting flaws in software applications. The ATT&CK framework categorizes this type of vulnerability under T1059.007 for scripting languages and T1566 for malicious file execution through web applications. Organizations should prioritize immediate patching of affected WordPress installations and implement comprehensive input validation measures. The remediation strategy should include updating to the latest plugin version, implementing web application firewalls, and conducting regular security audits of all installed plugins. Additionally, administrators should enforce strict input sanitization protocols and consider implementing Content Security Policy headers to mitigate potential exploitation scenarios.
The broader implications of this vulnerability highlight the critical importance of plugin security in WordPress ecosystems, where third-party components often introduce significant attack surface risks. This particular flaw demonstrates how seemingly minor input validation gaps can result in severe security consequences, emphasizing the need for continuous security monitoring and proactive vulnerability management across all web application components.