CVE-2020-15840: Liferay Digital Experience Platform

Medium severity, CVSS 5.3. EPSS: 1.2% chance of exploitation in the next 30 days.

In Liferay Portal before 7.3.1, Liferay Portal 6.2 EE, and Liferay DXP 7.2, DXP 7.1 and DXP 7.0, the property 'portlet.resource.id.banned.paths.regexp' can be bypassed with doubled encoded URLs.

Affected products

• Liferay Digital Experience Platform: version 7.0 only; version 7.1 only; version 7.2 only
• Liferay Liferay Portal: before 7.3.1 (fixed in 7.3.1); version 6.2 only

Published 2020-09-24. Last modified 2026-06-17.