Is CVE-2026-66390 being exploited?

No public exploit is currently tracked.

How severe is CVE-2026-66390?

CVE-2026-66390 has a CVSS v3 severity of MEDIUM (6.1).

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CVE-2026-66390

Description

Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') 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.