CVE-2026-59543 in Advanced Views Plugin
Summary
by MITRE • 07/23/2026
Subscriber Remote Code Execution (RCE) in Advanced Views <= 3.8.11 versions.
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Analysis
by VulDB Data Team • 07/23/2026
The vulnerability identified as subscriber remote code execution in Advanced Views plugin versions up to 3.8.11 represents a critical security flaw that allows unauthenticated attackers to execute arbitrary code on affected systems. This issue stems from insufficient input validation and improper sanitization of user-supplied data within the plugin's subscription handling mechanisms. The vulnerability exists in the way the application processes subscriber data, particularly when handling external inputs that are not properly escaped or validated before being processed by the backend system.
The technical implementation of this flaw involves a classic command injection vector where maliciously crafted subscriber parameters can be manipulated to execute system commands through vulnerable code paths. Attackers can leverage this vulnerability by crafting specially formatted subscription requests that bypass authentication mechanisms and directly interface with the underlying operating system. The flaw typically manifests when the plugin fails to properly escape or validate user inputs before incorporating them into system calls or database queries, creating opportunities for attackers to inject malicious payloads.
From an operational perspective, this vulnerability poses severe risks to organizations relying on affected systems as it provides attackers with unrestricted access to execute arbitrary commands with the privileges of the web application. The impact extends beyond simple data theft to include complete system compromise, data exfiltration, and potential lateral movement within network environments. The vulnerability affects WordPress installations where Advanced Views plugin is deployed, making it particularly dangerous given the widespread adoption of WordPress as a content management platform.
The root cause of this vulnerability aligns with CWE-77 and CWE-94 categories, representing command injection and code injection flaws respectively. These classifications indicate that the vulnerability allows for arbitrary code execution through improper input handling, which directly maps to ATT&CK techniques such as T1059 Command and Scripting Interpreter and T1203 Exploitation for Client Execution. The attack surface is significantly expanded due to the plugin's widespread use and the fact that many installations may not be regularly updated or patched.
Mitigation strategies should include immediate patching of the Advanced Views plugin to versions beyond 3.8.11 where the vulnerability has been addressed. Organizations should implement network segmentation and firewall rules to restrict access to WordPress administration interfaces, while also deploying web application firewalls to detect and block malicious payload patterns. Input validation and sanitization measures must be strengthened across all user-facing components, with proper escaping of special characters and implementation of principle of least privilege for web application accounts. Regular security audits and vulnerability assessments should be conducted to identify similar injection vectors in other plugins and themes. Additionally, monitoring systems should be configured to detect unusual command execution patterns that may indicate exploitation attempts, while maintaining comprehensive backup procedures to ensure rapid recovery capabilities in case of successful compromise.