CVE-2026-1189 is a stored cross-site scripting vulnerability in the LeadBI Plugin for WordPress affecting all versions up to 1.7. The issue is caused by improper neutralization of input in the 'form_id' parameter of the 'leadbi_form' shortcode, which fails to sanitize and escape user-supplied attributes properly. Authenticated attackers with Contributor-level privileges or higher can exploit this to inject arbitrary JavaScript code that executes in the context of users viewing the compromised pages. This can lead to impacts such as session hijacking or other script-based attacks. The vulnerability has a CVSS 3.1 score of 6.4 (medium severity). No patch or remediation details are currently provided.

An attacker with Contributor-level or higher access can inject persistent malicious scripts into pages via the vulnerable parameter. This can lead to unauthorized script execution in users' browsers, potentially resulting in information disclosure or session hijacking. The vulnerability does not affect availability and requires authenticated access, limiting the attack surface somewhat. There are no known exploits in the wild at this time.

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 removing or disabling the LeadBI Plugin if feasible. Monitor vendor channels for updates regarding patches or official mitigations.