What is CVE-2023-48653?

CVE-2023-48653 is a medium-severity vulnerability in Concretecms Concrete Cms, classified under Cross-Site Request Forgery (CSRF). CVSS score: 4.3/10. Published 2024-02-29.

How severe is CVE-2023-48653?

Medium severity. CVSS v3 base score is 4.3 out of 10.

CSRF in Concretecms Concrete Cms

CVE-2023-48653

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.

Vulnerability class: CSRF (Cross-Site Request Forgery)

Published 2024-02-29 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 4.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N.

EPSS exploit prediction

EPSS: 0.003 (18.0th percentile), scored 2026-09-30.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 18th percentile — 18.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.003 · newest: 0.003 · change: 0.000

Affected products

Concretecms Concrete Cms

Weakness classification (CWE)

CWE-352 — Cross-Site Request Forgery (CSRF)

References

documentation.concretecms.org/developers/introduction/version-history/923-relea… (Release Notes)
www.concretecms.org/about/project-news/security/2023-12-05-concrete-cms-new-cve… (Vendor Advisory)

Frequently asked questions

What is CVE-2023-48653?: CVE-2023-48653 is a medium-severity vulnerability in Concretecms Concrete Cms, classified under Cross-Site Request Forgery (CSRF). CVSS score: 4.3/10. Published 2024-02-29.
How severe is CVE-2023-48653?: Medium severity. CVSS v3 base score is 4.3 out of 10.