CVE-2021-40108

—

CVSS 3.1

8.8 high

EPSS

<1%p41

Published

Sep 27, 2021 (Sep 27, 2021)

Modified

Jun 17, 2026

Description

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.

Vendors: concretecms
Products: concrete cms
Weakness: CWE-352
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

NVD CVE.org GitHub PoCs EPSS (0.5%)

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