CVE-2024-48925: Umbraco CMS Improper Access Control Vulnerability Allows Low-Privilege Users to Access Webhook API

Severity: medium (CVSS 6.5 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.4% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2024-10-22 · updated 2026-06-17
Weakness: CWE-284

Description

Umbraco, a free and open source .NET content management system, has an improper access control issue starting in version 14.0.0 and prior to version 14.3.0. The issue allows low-privilege users to access the webhook API and retrieve information that should be restricted to users with access to the settings section. Version 14.3.0 contains a patch.

Affected products

Umbraco-CMS: from 14.0.0 before 14.3.0 — fixed in 14.3.0

How to fix

Upgrade to a fixed version: Umbraco-CMS 14.3.0. Check the vendor advisory for mitigations.

References

https://github.com/umbraco/Umbraco-CMS/security/advisories/GHSA-4gp9-ff99-j6vj

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