CVE-2021-40108

An issue was discovered in Concrete CMS through 8.5.5. The Calendar is vulnerable to CSRF. ccm_token is not verified on the ccm/calendar/dialogs/event/add/save endpoint.
CSRF
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTNIST
8.8 HIGH
NETWORK
LOW
NONE
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
mitreCNA
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CVEADP
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Base Score
CVSS 3.x
EPSS Score
Percentile: 33%
VendorProductVersion
concretecmsconcrete_cms
𝑥
< 8.5.6
𝑥
= Vulnerable software versions
Common Weakness Enumeration
References
https://documentation.concretecms.org/developers/introduction/version-history/856-release-notes
https://hackerone.com/reports/1102018
https://documentation.concretecms.org/developers/introduction/version-history/856-release-notes
https://hackerone.com/reports/1102018