CVE-2019-25027: Vaadin Flow

Medium severity, CVSS 6.1. EPSS: 0.7% chance of exploitation in the next 30 days.

Missing output sanitization in default RouteNotFoundError view in com.vaadin:flow-server versions 1.0.0 through 1.0.10 (Vaadin 10.0.0 through 10.0.13), and 1.1.0 through 1.4.2 (Vaadin 11.0.0 through 13.0.5) allows attacker to execute malicious JavaScript via crafted URL

Affected products

• Vaadin Flow: from 1.0.0, before 1.0.11 (fixed in 1.0.11); from 1.1.0, before 1.4.3 (fixed in 1.4.3)
• Vaadin Vaadin: from 10.0.0, before 10.0.14 (fixed in 10.0.14); from 11.0.0, before 13.0.6 (fixed in 13.0.6)

Published 2021-04-23. Last modified 2026-06-17.