CVE-2026-76546: Unknown User Profile Builder

Medium severity, CVSS 6.8. EPSS: 0.4% chance of exploitation in the next 30 days.

The User Profile Builder WordPress plugin before 4.0.1 does not escape the output of one of its optional shortcodes, allowing users with a role as low as contributor to perform Stored Cross-Site Scripting attacks against any user viewing the affected content, including administrators. The shortcode is not enabled by default.

Affected products

• Unknown User Profile Builder: from 3.3.4, before 4.0.1 (fixed in 4.0.1)

Published 2026-08-29. Last modified 2026-08-31.