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Description

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.

PUBLISHED Reserved 2026-05-12 | Published 2026-05-21 | Updated 2026-05-22 | Assigner ConcreteCMS




LOW: 2.3CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:P/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N

Problem types

CWE-352 Cross-Site request forgery (CSRF)

CWE-1275 Sensitive cookie with improper SameSite attribute

Product status

Default status
unaffected

9.0 (git)
affected

Credits

Yonatan Drori (Tenzai) finder

References

documentation.concretecms.org/...n-history/951-release-notes release-notes

cve.org (CVE-2026-8414)

nvd.nist.gov (CVE-2026-8414)

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