Umbraco possible user enumeration
Impact
A user enumeration attack is possible.
Affected versions
Umbraco 10 with access to the native login screen
Patches
This is fixed in 10.8.5
Workarounds
Disabling the native login screen, by exclusively use external logins.
Affected software
Click a technology to see all vulnerabilities affecting it.
| Platform | Package | Vulnerable versions | Fixed in |
|---|---|---|---|
| .NET (NuGet) | UmbracoCMS | >= 10.0.0, < 10.8.5 | 10.8.5 |
References
- CVSS vector
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N- Weakness (CWE)
CWE-203, CWE-204- Platform
- .NET (NuGet)
- Package
UmbracoCMS- Disclosed
- 20.03.2024
- Updated
- 11.10.2026 11:23
Sources and licenses
OSV / GitHub Advisory Database - GHSA-552f-97wf-pmpq - CC BY 4.0
Vulnerability history: UmbracoCMS
All published vulnerabilities of this package (.NET (NuGet)), newest first. Shows whether this is a one-off slip or a package that needs watching.
- Total entries
- 7
- First → latest
- 04.2021 01.2026
- Without a fix
- 1
- Exploited in attacks
- 0
Severity breakdown
- Medium 6
- Low 1
Disclosures per year
- 2021: 3
- 2022: 0
- 2023: 0
- 2024: 3
- 2025: 0
- 2026: 1
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