CVE-2023-48653

Severity: medium (CVSS 4.3 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.3% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2024-02-29 · updated 2026-06-17
Weakness: CWE-352

Description

Concrete CMS before 8.5.14 and 9 before 9.2.3 allows Cross Site Request Forgery (CSRF) via ccm/calendar/dialogs/event/delete/submit. An attacker can force an admin to delete events on the site because the event ID is numeric and sequential.

Affected products

Concrete CMS: before 8.5.14; from 9.0.0 before 9.2.3 — fixed in 8.5.14, 9.2.3

How to fix

Upgrade to a fixed version: Concrete CMS 8.5.14, 9.2.3. Check the vendor advisory for mitigations.

References

https://documentation.concretecms.org/developers/introduction/version-history/923-release-notes
https://www.concretecms.org/about/project-news/security/2023-12-05-concrete-cms-new-cves-and-cve-updates
https://documentation.concretecms.org/developers/introduction/version-history/923-release-notes
https://www.concretecms.org/about/project-news/security/2023-12-05-concrete-cms-new-cves-and-cve-updates

Get alerted when CVE-2023-48653 or the next vulnerability affects your stack