CVE-2026-2357 describes a stored cross-site scripting vulnerability in the Bold Page Builder WordPress plugin. The issue is due to improper sanitization and escaping of attributes passed to the 'bt_bb_shortcode' shortcode, allowing authenticated contributors and above to inject arbitrary JavaScript code. This code executes in the context of users visiting the injected pages, potentially leading to session hijacking or other client-side attacks. The vulnerability affects all plugin versions up to and including 5.6.8.

An attacker with contributor-level or higher privileges can inject persistent malicious scripts into pages via the vulnerable shortcode. These scripts execute in the browsers of users who view the compromised pages, potentially leading to theft of sensitive information or unauthorized actions performed on behalf of users. The vulnerability does not affect availability but impacts confidentiality and integrity.

Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is available, restrict contributor-level access to trusted users only and consider disabling or limiting use of the 'bt_bb_shortcode' shortcode to reduce risk.