CVE-2022-1896: Underconstruction Project Underconstruction

Medium severity, CVSS 4.8. EPSS: 0.6% chance of exploitation in the next 30 days.

The underConstruction WordPress plugin before 1.21 does not sanitise or escape the "Display a custom page using your own HTML" setting before outputting it, allowing high privilege users to perform Cross-Site Scripting attacks even when the unfiletred_html capability is disallowed.

Affected products

• Underconstruction Project Underconstruction: before 1.21 (fixed in 1.21)

Published 2022-06-20. Last modified 2026-06-17.