CVE-2026-66391
A remote, anonymous attacker can exploit multiple vulnerabilities in Apache Wicket to carry out a Cross-Site Scripting attack and to bypass security measures.
CSIRTS triage
- What
- Multiple vulnerabilities allow Cross-Site Scripting and security measure bypass.
- Who is affected
- Remote, anonymous attackers targeting Apache Wicket deployments.
- Urgency
- Remediation is medium urgency due to the potential for exploitation.
- Action
- Update to the latest version of Apache Wicket.
AI-assisted analysis generated from the source advisory — verify against the original.
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Exploitation outlook
- Low exploitation risk0.20% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 10% of all EPSS-scored CVEs.
Advisory coverage (2)
- medium[NEW] [medium] Apache Wicket: Multiple vulnerabilitiescert-bund · 2026-07-28
- mediumCVE-2026-66391: Use of Insufficiently Random Values, Protection Mechanism Failure vulnerability in Apache Wick…nvd · 2026-07-27
External references
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[](https://www.csirts.com/cve/CVE-2026-66391)