Auth bypass in Umbraco Cms

CVE-2020-29454

Editors/LogViewerController.cs in Umbraco through 8.9.1 allows a user to visit a logviewer endpoint even if they lack Applications.Settings access.

Vulnerability class: Broken Access Control

EPSS: 0.009 (55.9th percentile) — read the EPSS interpretation.

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:L/I:N/A:N.

Affected products

Umbraco Umbraco_cms
N/a — versions n/a

Weakness classification (CWE)

CWE-863 — Incorrect Authorization

References

cve@mitre.org (Third Party Advisory, x_refsource_MISC)

Frequently asked questions

What is CVE-2020-29454?: CVE-2020-29454 is a medium-severity vulnerability in Umbraco Cms, classified under Incorrect Authorization. CVSS score: 4.3/10. Published 2020-12-02.
How severe is CVE-2020-29454?: Medium severity. CVSS v3 base score is 4.3 out of 10.