CVE-2026-1927 in Greenshift Plugin
Summary
by MITRE • 02/05/2026
The Greenshift – animation and page builder blocks plugin for WordPress is vulnerable to unauthorized access of data due to a missing capability check on the greenshift_app_pass_validation() function in all versions up to, and including, 12.6. This makes it possible for authenticated attackers, with Subscriber-level access and above, to retrieve global plugin settings including stored AI API keys and modify plugin settings, including the injection of arbitrary web scripts via the 'custom_css' value (stored XSS). NOTE: This vulnerability was partially patched in version 12.6.
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Analysis
by VulDB Data Team • 03/03/2026
The vulnerability identified as CVE-2026-1927 affects the Greenshift WordPress plugin, specifically targeting versions up to and including 12.6. This plugin serves as an animation and page builder solution that allows users to create dynamic web content through various block components. The flaw resides within the greenshift_app_pass_validation() function which fails to implement proper capability checks, creating a critical authorization bypass issue. Attackers with Subscriber-level access or higher can exploit this weakness to access sensitive plugin configurations, potentially compromising the entire WordPress installation's security posture.
The technical implementation of this vulnerability stems from inadequate input validation and privilege enforcement mechanisms within the plugin's core functionality. The missing capability check means that any authenticated user regardless of their role can invoke the validation function without proper authorization verification. This oversight allows for unauthorized data retrieval operations that should be restricted to administrators or users with appropriate privileges. The vulnerability manifests through the plugin's handling of global settings, where stored API credentials including AI keys become accessible to lower-privileged users, creating a significant risk for organizations relying on the plugin for automated content generation and AI-powered features.
The operational impact of this vulnerability extends beyond simple data exposure to include potential code injection capabilities through the custom_css parameter. This creates a pathway for attackers to execute arbitrary web scripts within the context of the victim's browser, effectively enabling stored cross-site scripting attacks. The combination of unauthorized data access and XSS capabilities provides attackers with a comprehensive attack surface that can be leveraged for further exploitation. Security researchers have noted that the vulnerability allows for privilege escalation within the plugin's administrative interface, potentially enabling attackers to modify critical plugin configurations and establish persistent access points.
Organizations should immediately implement mitigations including updating to version 12.6.1 or later, which contains partial patching for this vulnerability. The recommended approach involves thorough security auditing of all plugin installations, particularly focusing on identifying and removing any unauthorized access points that may have been established through this vulnerability. System administrators should also implement network monitoring to detect unusual access patterns or data exfiltration attempts that could indicate exploitation of this vulnerability. Additionally, organizations should review their WordPress user access controls and ensure that only authorized personnel maintain administrative privileges, as this vulnerability demonstrates the critical importance of proper role-based access controls. The ATT&CK framework categorizes this vulnerability under privilege escalation and credential access tactics, while CWE classification places it within the category of insufficient authorization checks, making it a significant concern for enterprise security postures and compliance requirements.