CVE-2026-66391: Apache Wicket

Medium severity, CVSS 6.5. EPSS: 0.6% chance of exploitation in the next 30 days.

Use of Insufficiently Random Values, Protection Mechanism Failure vulnerability in Apache Wicket. This issue affects Apache Wicket: from 9.0.0 through 9.23.0, from 10.0.0 through 10.9.0. Users are recommended to upgrade to version 10.10.0, which fixes the issue.

Affected products

• Apache Wicket: from 9.0.0, up to and including 9.23.0; from 10.0.0, before 10.10.0 (fixed in 10.10.0)

Published 2026-07-27. Last modified 2026-08-05.