CVE-2026-84021: Unknown Bold Page Builder

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

The Bold Page Builder WordPress plugin before 5.9.8 does not properly validate a link URL before outputting it in an HTML attribute, relying on a filter that can be evaded, allowing users with the Contributor role and above to inject arbitrary web scripts that execute when a user clicks the affected link.

Affected products

• Unknown Bold Page Builder: before 5.9.8 (fixed in 5.9.8)

Published 2026-09-05. Last modified 2026-09-08.