CVE-2026-8414: Concrete CMS 9 before 9.5.0 is vulnerable to Cross Site Request Forgery (CSRF) at concrete/controllers/dialog/event/duplicate
Concrete CMS 9 before 9.5.0 is vulnerable to Cross Site Request Forgery (CSRF) at concrete/controllers/dialog/event/duplicate. The Concrete CMS security team gave this vulnerability a CVSS v.4.0 score of 2.3 with vector CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:P/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N. Thanks Yonatan Drori (Tenzai) for reporting.
Affected Software
Remediation
Recommended actions to resolve this vulnerability, in priority order.
- Upgrade
Upgrade
Concrete CMSto a version that resolves this vulnerability.Fixed in 9.5.0
Event History
Frequently Asked Questions
What is the severity of CVE-2026-8414?
The severity of CVE-2026-8414 is low, with a CVSS v.4.0 score of 2.3.
How do I fix CVE-2026-8414?
To fix CVE-2026-8414, update Concrete CMS to version 9.5.0 or later.
What type of vulnerability is CVE-2026-8414?
CVE-2026-8414 is a Cross Site Request Forgery (CSRF) vulnerability.
Which versions of Concrete CMS are affected by CVE-2026-8414?
CVE-2026-8414 affects Concrete CMS versions prior to 9.5.0.
When was CVE-2026-8414 published?
CVE-2026-8414 was published on May 21, 2026.