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Description

Umbraco is an ASP.NET content management system (CMS). Starting in version 14.0.0 and prior to versions 15.4.2 and 16.0.0, it's possible to upload a file that doesn't adhere with the configured allowable file extensions via a manipulated API request. The issue is patched in versions 15.4.2 and 16.0.0. No known workarounds are available.

PUBLISHED Reserved 2025-05-28 | Published 2025-06-03 | Updated 2025-06-03 | Assigner GitHub_M




MEDIUM: 5.5CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:C/C:L/I:L/A:L

Problem types

CWE-434: Unrestricted Upload of File with Dangerous Type

Product status

>= 14.0.0, < 15.4.2
affected

References

github.com/...co-CMS/security/advisories/GHSA-fr6r-p8hv-x3c4

github.com/...ommit/d920e93d1ee29dc3301697e444f53e8cd5db3cf9

cve.org (CVE-2025-48953)

nvd.nist.gov (CVE-2025-48953)

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