CVE-2025-12934 is a vulnerability classified under CWE-862 (Missing Authorization) found in the Beaver Builder WordPress Page Builder plugin, versions up to and including 2.9.4.1. The root cause is the absence of a capability check in the 'duplicate_wpml_layout' function, which is responsible for duplicating layouts within the plugin. This flaw allows any authenticated user with at least Subscriber-level privileges to invoke this function and update arbitrary posts with the content of other existing posts created by Beaver Builder. Since Subscribers typically have limited permissions, this vulnerability effectively escalates their ability to modify content beyond intended boundaries. The attack vector is remote network access via authenticated WordPress sessions, with no user interaction required. The impact includes unauthorized disclosure of private or password-protected posts, as well as potential overwriting or deletion of content that is not backed up or saved in revisions. The vulnerability affects all versions of the plugin prior to the fix, and no official patches or updates are linked yet. Although no active exploitation has been reported, the high CVSS score of 8.1 reflects the significant confidentiality and integrity risks posed by this vulnerability. The lack of authentication bypass means that attackers must have at least Subscriber access, which could be obtained through other means such as phishing or credential stuffing. The vulnerability is particularly dangerous for websites relying heavily on Beaver Builder for content management and layout, especially those hosting sensitive or private information.

For European organizations, this vulnerability poses a serious risk to the confidentiality and integrity of website content managed via Beaver Builder. Attackers with low-level authenticated access can manipulate or expose sensitive data, including private or password-protected posts, potentially leading to data breaches and reputational damage. The ability to overwrite or delete content without recovery options threatens content availability and business continuity, especially for organizations lacking robust backup strategies. This can impact sectors such as finance, healthcare, government, and e-commerce, where data privacy and integrity are paramount under regulations like GDPR. Additionally, compromised websites may be used as vectors for further attacks or misinformation, amplifying the threat. The vulnerability's exploitation could also undermine trust in digital services and lead to regulatory penalties if personal data is exposed. Given the widespread use of WordPress and Beaver Builder in Europe, the threat surface is significant, particularly for small and medium enterprises that may have weaker security controls and limited monitoring capabilities.

European organizations should immediately audit their WordPress installations to identify the use of Beaver Builder plugin versions up to 2.9.4.1. Until an official patch is released, mitigation steps include restricting Subscriber-level user creation and access, implementing strict user role management, and monitoring for unusual post modifications. Employing Web Application Firewalls (WAFs) with custom rules to detect and block requests targeting the 'duplicate_wpml_layout' function can reduce exploitation risk. Regular backups with versioning should be enforced to enable recovery from unauthorized content changes. Organizations should also enhance authentication security by enforcing multi-factor authentication (MFA) for all users with WordPress accounts and conducting credential hygiene reviews to prevent unauthorized access. Monitoring WordPress logs for suspicious activity related to post duplication or modification is critical. Once a patch is available, prompt application is essential. Additionally, consider isolating critical content management systems from public networks or limiting access via VPNs to reduce exposure.