CVE-2026-8409: Concrete CMS 9 before 9.5.0 is vulnerable to Cross Site Request Forgery (CSRF) at concrete/controllers/dialog/logs/delete
Concrete CMS 9 before 9.5.0 is vulnerable to Cross Site Request Forgery (CSRF) at concrete/controllers/dialog/logs/delete. The 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 CMS 9to a version that resolves this vulnerability.Fixed in 9.5.0
Event History
Frequently Asked Questions
What is the severity of CVE-2026-8409?
The severity of CVE-2026-8409 is low, with a CVSS score of 2.3.
What is CVE-2026-8409?
CVE-2026-8409 refers to a Cross Site Request Forgery (CSRF) vulnerability in Concrete CMS 9 before version 9.5.0.
How do I fix CVE-2026-8409?
To fix CVE-2026-8409, you should upgrade Concrete CMS to version 9.5.0 or later.
What consequences can result from CVE-2026-8409?
Exploitation of CVE-2026-8409 could allow unauthorized actions to be performed on behalf of a legitimate user.
Who is affected by CVE-2026-8409?
All users of Concrete CMS 9 versions prior to 9.5.0 are affected by CVE-2026-8409.