Incorrect permission enforcement in UmbracoCms

MEDIUM 4.3CVE-2020-29454 · GHSA-4vp3-vfww-8648 · Published 02/12/2020 · updated 17/06/2026

In short

CVE-2020-29454 is a MEDIUM (CVSS 4.3) vulnerability affecting UmbracoCms, umbraco cms (umbraco).
Chance of exploitation in the next 30 days (EPSS): 0.91%, higher than 59.9% of all vulnerabilities.
Fix: update to 8.10.0 or later.

Package	Affected versions	Patched versions
UmbracoCms NuGet	`< 8.10.0`	`8.10.0`
umbraco cms umbraco	`≥ 8.0.0, ≤ 8.9.1`	No fix yet

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

NVD description

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

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Package

Affected versions

Patched versions

NuGet

< 8.10.0

8.10.0

≥ 8.0.0, ≤ 8.9.1

No fix yet

Description

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

NVD description

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

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