What is CVE-2023-48227?

CVE-2023-48227 is a medium-severity vulnerability in Umbraco Umbraco-Cms, classified under Incorrect Authorization. CVSS score: 4.3/10. Published 2023-12-12.

How severe is CVE-2023-48227?

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

Auth bypass in Umbraco Umbraco-Cms

CVE-2023-48227

Umbraco is an ASP.NET content management system (CMS). Starting in version 8.0.0 and prior to versions 8.18.10, 10.7.0, and 12.3.0, Backoffice users with send for approval permission but not publish permission are able to publish in some scenarios. Versions 8.18.10, 10.7.0, and 12.3.0 contains a patch for this issue. No known workarounds are available.

Vulnerability class: Broken Access Control

Published 2023-12-12 · last modified 2026-06-17.

CVSS v3 metric

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

EPSS exploit prediction

EPSS: 0.004 (32.5th percentile), scored 2026-09-29.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 33rd percentile — 32.5% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.004 · newest: 0.004 · change: 0.000

Affected products

Umbraco Umbraco-Cms — versions >= 8.0.0, < 8.18.10, >= 9.0.0-rc001, < 10.7.0, >= 11.0.0-rc1, < 12.3.0
Umbraco Cms

Weakness classification (CWE)

CWE-863 — Incorrect Authorization

References

github.com/umbraco/Umbraco-CMS/security/advisories/GHSA-335x-5wcm-8jv2 (URL Repurposed)

Frequently asked questions

What is CVE-2023-48227?: CVE-2023-48227 is a medium-severity vulnerability in Umbraco Umbraco-Cms, classified under Incorrect Authorization. CVSS score: 4.3/10. Published 2023-12-12.
How severe is CVE-2023-48227?: Medium severity. CVSS v3 base score is 4.3 out of 10.