umbraco/umbraco-cms · Security
Umbraco Vulnerable to By-Pass of Configured Allowed Extensions for File Uploads
- GHSA ID
- GHSA-fr6r-p8hv-x3c4
- CVE ID
- CVE-2025-48953
- Severity
- medium
- Published
- Updated
- CVSS
- 5.5 · CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:C/C:L/I:L/A:L
- CVSS v3
- 5.5 · CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:C/C:L/I:L/A:L
Description
Impact
Via a manipulated API request it's possible to upload a file that doesn't adhere with the configured allowable file extensions.
Patches
Patched in 15.4.2 and 16.0.0.
Workarounds
None available.
CWEs
- CWE-434 · Unrestricted Upload of File with Dangerous Type