Vulnerability 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.
CVSS Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Umbraco | Umbraco Cms | >= 14.0.0, < 15.4.2 |
Related Weaknesses (CWE)
References
- https://github.com/umbraco/Umbraco-CMS/commit/d920e93d1ee29dc3301697e444f53e8cd5Patch
- https://github.com/umbraco/Umbraco-CMS/security/advisories/GHSA-fr6r-p8hv-x3c4PatchThird Party Advisory
FAQ
What is CVE-2025-48953?
CVE-2025-48953 is a vulnerability with a CVSS score of 5.5 (MEDIUM). 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 allowa...
How severe is CVE-2025-48953?
CVE-2025-48953 has been rated MEDIUM with a CVSS base score of 5.5/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2025-48953?
Check the references section above for vendor advisories and patch information. Affected products include: Umbraco Umbraco Cms.