Authenticated path traversal in Umbraco CMS
An authenticated path traversal vulnerability exists during package installation in Umbraco CMS <= 8.9.1 or current, which could result in arbitrary files being written outside of the site home and expected paths when installing an Umbraco package.
Affected software
Click a technology to see all vulnerabilities affecting it.
| Platform | Package | Vulnerable versions | Fixed in |
|---|---|---|---|
| .NET (NuGet) | UmbracoCms | < 8.9.2 | 8.9.2 |
References
- CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N- Weakness (CWE)
CWE-22- Platform
- .NET (NuGet)
- Package
UmbracoCms- Disclosed
- 13.04.2021
- Updated
- 11.10.2026 11:23
Sources and licenses
OSV / GitHub Advisory Database - GHSA-936x-wgqv-hhgq - 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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Authenticated path traversal in Umbraco CMS this entry
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