CVE-2026-85574: Unknown Unbounce Landing Pages

High severity, CVSS 8.0. EPSS: 0.3% chance of exploitation in the next 30 days.

The Unbounce Landing Pages WordPress plugin before 1.1.5 does not perform any authorisation check when updating the configuration its front-end proxy relies on, allowing any authenticated user, such as a subscriber, to point that proxy at a host they control and have arbitrary content served from the site's own origin.

Affected products

• Unknown Unbounce Landing Pages: from 1.1.1, before 1.1.5 (fixed in 1.1.5)

Published 2026-09-19. Last modified 2026-09-21.