CVE-2025-48953

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.

CVSS v3 5.5 MEDIUM

5.5^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 1.3 / Impact : 3.7

Attack Vector NETWORK

Attack Complexity HIGH

Privileges Required LOW

User Interaction REQUIRED

Confidentiality Impact LOW

Integrity Impact LOW

Availability Impact LOW

Scope CHANGED

References

Link	Resource
https://github.com/umbraco/Umbraco-CMS/commit/d920e93d1ee29dc3301697e444f53e8cd5db3cf9	Patch
https://github.com/umbraco/Umbraco-CMS/security/advisories/GHSA-fr6r-p8hv-x3c4	Third Party Advisory Patch

Configurations

Configuration 1 (hide)

cpe:2.3:a:umbraco:umbraco_cms:*:*:*:*:*:*:*:*

History

22 Sep 2025, 13:54

Type	Values Removed	Values Added
CPE		cpe:2.3:a:umbraco:umbraco_cms::::::::
References	~~() https://github.com/umbraco/Umbraco-CMS/commit/d920e93d1ee29dc3301697e444f53e8cd5db3cf9 -~~	() https://github.com/umbraco/Umbraco-CMS/commit/d920e93d1ee29dc3301697e444f53e8cd5db3cf9 - Patch
References	~~() https://github.com/umbraco/Umbraco-CMS/security/advisories/GHSA-fr6r-p8hv-x3c4 -~~	() https://github.com/umbraco/Umbraco-CMS/security/advisories/GHSA-fr6r-p8hv-x3c4 - Third Party Advisory, Patch
First Time		Umbraco Umbraco umbraco Cms

04 Jun 2025, 14:54

Type	Values Removed	Values Added
Summary		(es) Umbraco es un sistema de gestión de contenido (CMS) ASP.NET. A partir de la versión 14.0.0 y anteriores a las versiones 15.4.2 y 16.0.0, es posible cargar un archivo que no cumple con las extensiones permitidas configuradas mediante una solicitud de API manipulada. El problema se solucionó en las versiones 15.4.2 y 16.0.0. No se conocen workarounds.

03 Jun 2025, 19:15

Type	Values Removed	Values Added
New CVE

Information

Published : 2025-06-03 19:15

Updated : 2025-09-22 13:54

NVD link : CVE-2025-48953

Mitre link : CVE-2025-48953

CVE.ORG link : CVE-2025-48953

JSON object : View

Products Affected

umbraco

umbraco_cms

CWE

CWE-434

Unrestricted Upload of File with Dangerous Type

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