CVE-2026-42509: Apache Wicket

Medium severity, CVSS 6.1. EPSS: 0.6% chance of exploitation in the next 30 days.

Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in Apache Wicket. This issue affects Apache Wicket: from 8.0.0 through 8.17.0, 9.0.0, from 10.0.0 through 10.8.0. Users are recommended to upgrade to version 10.9.0, which fixes the issue.

Affected products

• Apache Wicket: from 8.0.0, up to and including 8.17.0; from 9.0.0, up to and including 9.22.0; from 10.0.0, before 10.9.0 (fixed in 10.9.0)

Published 2026-05-06. Last modified 2026-06-17.