Vulnerability Details 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.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.0
EPSS Ranking 8.4%
CVSS Severity
CVSS v3 Score 5.5
References
Products affected by CVE-2025-48953
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cpe:2.3:a:umbraco:umbraco_cms:14.0.0
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cpe:2.3:a:umbraco:umbraco_cms:14.1.0
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cpe:2.3:a:umbraco:umbraco_cms:14.1.1
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cpe:2.3:a:umbraco:umbraco_cms:14.1.2
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cpe:2.3:a:umbraco:umbraco_cms:14.2.0
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cpe:2.3:a:umbraco:umbraco_cms:14.3.0
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cpe:2.3:a:umbraco:umbraco_cms:14.3.1
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cpe:2.3:a:umbraco:umbraco_cms:14.3.2
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cpe:2.3:a:umbraco:umbraco_cms:14.3.3
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cpe:2.3:a:umbraco:umbraco_cms:14.3.4
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cpe:2.3:a:umbraco:umbraco_cms:15.0.0
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cpe:2.3:a:umbraco:umbraco_cms:15.1.0
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cpe:2.3:a:umbraco:umbraco_cms:15.1.1
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cpe:2.3:a:umbraco:umbraco_cms:15.1.2
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cpe:2.3:a:umbraco:umbraco_cms:15.2.0
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cpe:2.3:a:umbraco:umbraco_cms:15.2.1
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cpe:2.3:a:umbraco:umbraco_cms:15.2.3
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cpe:2.3:a:umbraco:umbraco_cms:15.3.1