CVE-2020-9472
Unrestricted Upload of File with Dangerous Type in Umbraco CMS
Umbraco CMS 8.5.3 allows an authenticated file upload (and consequently Remote Code Execution) via the Install Package functionality.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- Low
- User interaction
- None
What an attacker can affect
- Confidentiality
- None
- Integrity
- High
- Availability
- None
Exploit likelihood
What each source reports
NVD Score used
Umbraco CMS 8.5.3 allows an authenticated file upload (and consequently Remote Code Execution) via the Install Package functionality.
- Record
CVE-2020-9472- CVSS 3.1
- 6.5 Medium
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N - CVSS 2.0
- 4.0 Medium
AV:N/AC:L/Au:S/C:N/I:P/A:N - Weakness
- CWE-434
- Updated
- 2026-11-02
CVE List No score
Umbraco CMS 8.5.3 allows an authenticated file upload (and consequently Remote Code Execution) via the Install Package functionality.
- Record
CVE-2020-9472- Updated
- 2026-11-02
EUVDEUVD-2021-1768 No score
Umbraco CMS 8.5.3 allows an authenticated file upload (and consequently Remote Code Execution) via the Install Package functionality.
- Record
EUVD-2021-1768- Updated
- 2026-11-03
GitHub AdvisoriesGHSA-j66f-h9hm-975m
Unrestricted Upload of File with Dangerous Type in Umbraco CMS
Umbraco CMS 8.5.3 allows an authenticated file upload (and consequently Remote Code Execution) via the Install Package functionality.
- Record
GHSA-j66f-h9hm-975m- CVSS 3.1
- 6.5 Medium
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N - Weakness
- CWE-434
- Updated
- 2026-11-02
OSV
Umbraco CMS 8.5.3 allows an authenticated file upload (and consequently Remote Code Execution) via the Install Package functionality.
- Record
CVE-2020-9472- CVSS 3.1
- 6.5 Medium
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N - Updated
- 2026-11-02
OSVGHSA-j66f-h9hm-975m
Unrestricted Upload of File with Dangerous Type in Umbraco CMS
Umbraco CMS 8.5.3 allows an authenticated file upload (and consequently Remote Code Execution) via the Install Package functionality.
- Record
GHSA-j66f-h9hm-975m- CVSS 3.1
- 6.5 Medium
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N - Weakness
- CWE-434
- Updated
- 2026-11-02
Affected products
Affected packages
| Package | Affected | Fixed |
|---|---|---|
UmbracoCmsNuGet |
through 8.5.3 | 8.5.4 |
UmbracoCmsNuGet |
before 8.5.4, plus listed versions 4.10.04.10.0-beta4.10.0-rc4.10.14.10.1.1 Show 45 moreShow less4.11.04.11.14.11.104.11.24.11.2.14.11.2.24.11.2.34.11.34.11.3.14.11.44.11.54.11.64.11.74.11.84.11.94.7.24.8.04.8.0-beta4.8.14.9.04.9.16.0.06.0.0-RC6.0.0-beta6.0.16.0.26.0.36.0.46.0.56.0.66.0.76.0.7.16.1.06.1.0-beta6.1.0-beta-26.1.16.1.26.1.2.16.1.2.26.1.36.1.46.1.56.1.66.2.06.2.0-RC |
8.5.4 |
History
| Recorded | Changed | Sources |
|---|---|---|
| aliases | EUVD | |
| first indexed | CVE List, GitHub Advisories, NVD, OSV |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2020-9472 is a medium vulnerability (CVSS 6.5) in Umbraco Cms, published March 16, 2020. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 2.11%, the 81st percentile. Fixed in UmbracoCms 8.5.4.
References
Left out here: 189 versions. The JSON record has them.