The vulnerability identified as CVE-2026-14921 involves a Cross-Site Scripting (CWE-79) flaw in the Ultimate Addons for WPBakery Page Builder plugin for WordPress. Specifically, the issue exists in the shared link-rendering function Ultimate_VC_Addons::uavc_link_init() in versions prior to 3.21.5. The CVSS 3.1 base score is 6.1, indicating a medium severity with network attack vector, low attack complexity, no privileges required, user interaction required, scope changed, and limited confidentiality and integrity impact without availability impact. No patch or official remediation level has been published yet.

Successful exploitation of this vulnerability could allow an attacker to execute arbitrary scripts in the context of the affected website, potentially leading to information disclosure or manipulation of site content. The impact is limited to confidentiality and integrity with no availability impact. The vulnerability requires user interaction to be exploited and can be triggered remotely without authentication.

Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is released, users should monitor vendor communications for updates. No specific temporary mitigations or workarounds are provided in the available data.