AIKIDO-2025-10352
Umbraco.Cms is vulnerable to Unrestricted Upload of File with Dangerous Type
55
Medium Risk
This Affects:
Umbraco.CmsTL;DR
Affected versions of this package are vulnerable to Arbitrary File Upload due to insufficient validation of file extensions in API requests. An attacker can craft a request that bypasses the configured restrictions, allowing the upload of files with disallowed or dangerous extensions.
Who does this affect?
You are affected if you are using a version that falls within the vulnerable range.
Background info
Umbraco.Cms is vulnerable to Unrestricted Upload of File with Dangerous Type in versions 14.0.0 - 15.4.1.
How to fix this
Upgrade the Umbraco.Cms library to the patch version.
Links
GitHub Release
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SOC 2Compliant
ISO 27001Compliant