CVE-2026-1927 is a vulnerability classified under CWE-862 (Missing Authorization) found in the Greenshift – animation and page builder blocks plugin for WordPress, developed by wpsoul. The issue stems from the absence of a capability check in the greenshift_app_pass_validation() function, which is responsible for validating certain plugin operations. This missing authorization allows any authenticated user with at least Subscriber-level privileges to access global plugin settings that should be restricted. Among the exposed data are stored AI API keys, which could be leveraged for further attacks or unauthorized use of AI services integrated with the plugin. The vulnerability affects all versions up to and including 12.5.7, with no patch currently available. The CVSS v3.1 base score is 4.3, indicating medium severity, with the vector AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N, meaning it is remotely exploitable over the network with low attack complexity, requires low privileges, no user interaction, and impacts confidentiality only. No known exploits have been reported in the wild, but the exposure of API keys and global settings poses a risk of information leakage and potential misuse. The vulnerability is particularly concerning for WordPress sites that allow many users with Subscriber or higher roles, as it broadens the attack surface beyond administrators. Since the plugin is used for animation and page building, it is likely deployed on marketing, corporate, and content-rich websites, increasing the potential impact.

For European organizations, this vulnerability can lead to unauthorized disclosure of sensitive plugin configuration data, including AI API keys, which may be used to access paid AI services fraudulently or to gather intelligence for further attacks. Although the vulnerability does not directly affect data integrity or site availability, the confidentiality breach can undermine trust and compliance with data protection regulations such as GDPR. Organizations relying on Greenshift for website content management may face reputational damage if attackers exploit this flaw to extract sensitive information. The risk is amplified in environments where many users have Subscriber or Contributor roles, as these accounts can be leveraged to exploit the vulnerability. Additionally, exposure of API keys could lead to financial losses or service disruptions if attackers misuse these credentials. The medium CVSS score reflects moderate risk, but the actual impact depends on the sensitivity of the exposed data and the organization's reliance on the plugin's AI integrations.

1. Monitor the plugin vendor's official channels for a security patch and apply updates promptly once available. 2. Until a patch is released, restrict user roles and permissions to minimize the number of users with Subscriber-level or higher access, especially on sites using Greenshift. 3. Implement custom authorization checks or filters in WordPress to enforce capability checks on the greenshift_app_pass_validation() function, preventing unauthorized access. 4. Audit and rotate any AI API keys stored in the plugin settings to invalidate potentially compromised credentials. 5. Conduct regular security reviews of WordPress user roles and plugin configurations to detect and remediate excessive permissions. 6. Employ web application firewalls (WAFs) with custom rules to detect and block suspicious requests targeting the vulnerable function. 7. Educate site administrators about the risks of granting unnecessary privileges to users and encourage the principle of least privilege. 8. Consider isolating or sandboxing AI API keys and sensitive plugin data to limit exposure in case of compromise.