CVE-2026-66391
Apache Wicket: leaked and missing CSP headers
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.
INFO
Published Date :
July 27, 2026, 5:16 p.m.
Last Modified :
July 28, 2026, 4:20 p.m.
Remotely Exploit :
Yes !
Source :
[email protected]
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS | 134c704f-9b21-4f2e-91b3-4a467353bcc0 | |||||
| CVSS 3.1 | MEDIUM | 134c704f-9b21-4f2e-91b3-4a467353bcc0 |
Solution
- Upgrade Apache Wicket to version 10.10.0.
- Apply vendor-supplied patches or updates.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2026-66391.
| URL | Resource |
|---|---|
| https://lists.apache.org/thread/hfzcgjsbmmthzchtb8b8nv47d95scmqk | |
| http://www.openwall.com/lists/oss-security/2026/07/27/5 |
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-66391 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2026-66391
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2026-66391 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-66391 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
CVE Modified by [email protected]
Jul. 28, 2026
Action Type Old Value New Value Changed Affected [{'vendor': 'Apache Software Foundation', 'product': 'Apache Wicket', 'versions': [{'status': 'affected', 'version': '9.0.0', 'versionType': 'semver', 'lessThanOrEqual': '9.23.0'}, {'status': 'affected', 'version': '10.0.0', 'versionType': 'semver', 'lessThanOrEqual': '10.9.0'}], 'defaultStatus': 'unaffected'}] [{'vendor': 'Apache Software Foundation', 'product': 'Apache Wicket', 'versions': [{'status': 'affected', 'version': '9.0.0', 'versionType': 'semver', 'lessThanOrEqual': '9.23.0'}, {'status': 'affected', 'version': '10.0.0', 'versionType': 'semver', 'lessThanOrEqual': '10.9.0'}], 'packageName': 'org.apache.wicket:wicket-core', 'collectionURL': 'https://repo.maven.apache.org/maven2', 'defaultStatus': 'unaffected'}] -
CVE Modified by af854a3a-2127-422b-91ae-364da2661108
Jul. 27, 2026
Action Type Old Value New Value Added Reference http://www.openwall.com/lists/oss-security/2026/07/27/5 -
CVE Modified by 134c704f-9b21-4f2e-91b3-4a467353bcc0
Jul. 27, 2026
Action Type Old Value New Value Added CVSS V3.1 AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N Added SSVC {'id': 'CVE-2026-66391', 'role': 'CISA Coordinator', 'options': [{'exploitation': 'none'}, {'automatable': 'yes'}, {'technicalImpact': 'partial'}], 'version': '2.0.3', 'timestamp': '2026-07-27T18:04:42.074179Z'} -
New CVE Received by [email protected]
Jul. 27, 2026
Action Type Old Value New Value Added Affected [{'vendor': 'Apache Software Foundation', 'product': 'Apache Wicket', 'versions': [{'status': 'affected', 'version': '9.0.0', 'versionType': 'semver', 'lessThanOrEqual': '9.23.0'}, {'status': 'affected', 'version': '10.0.0', 'versionType': 'semver', 'lessThanOrEqual': '10.9.0'}], 'defaultStatus': 'unaffected'}] Added 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. Added CWE CWE-693 Added CWE CWE-330 Added Reference https://lists.apache.org/thread/hfzcgjsbmmthzchtb8b8nv47d95scmqk