CVE-2026-66391 — MEDIUM (6.5)

Q: How severe is CVE-2026-66391?

CVE-2026-66391 has been rated MEDIUM with a CVSS base score of 6.5/10. Review the CVSS metrics above for detailed severity breakdown.

Q: Is there a patch for CVE-2026-66391?

Check the references section above for vendor advisories and patch information. Affected products include: Apache Wicket.

Vulnerability Description

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.

CVSS Score

6.5

MEDIUM

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality

LOW

Integrity

LOW

Availability

NONE

Affected Products

Vendor	Product	Versions
Apache	Wicket	>= 9.0.0, <= 9.23.0

Related Weaknesses (CWE)

CWE-693 CWE-330

References

https://lists.apache.org/thread/hfzcgjsbmmthzchtb8b8nv47d95scmqkMailing ListVendor Advisory
http://www.openwall.com/lists/oss-security/2026/07/27/5Mailing ListThird Party Advisory

FAQ

What is CVE-2026-66391?

CVE-2026-66391 is a vulnerability with a CVSS score of 6.5 (MEDIUM). 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 r...

How severe is CVE-2026-66391?

CVE-2026-66391 has been rated MEDIUM with a CVSS base score of 6.5/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2026-66391?

Check the references section above for vendor advisories and patch information. Affected products include: Apache Wicket.