CVE-2020-9472 json
Unrestricted Upload of File with Dangerous Type in Umbraco CMS
published 2020-03-16 6 y ago modified 2026-09-10 1 mo ago also GHSA-j66f-h9hm-975m , EUVD-2021-1768
- cvss
- 6.5
- version 3.1, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 2.1%
- EPSS 2.1% chance of exploitation in 30 days, percentile 81%
- public exploits
- 0
- none known
Summary
Umbraco CMS 8.5.3 allows an authenticated file upload (and consequently Remote Code Execution) via the Install Package functionality.
Patch / fix
- nuget UmbracoCms 8.5.4
Exploit prediction
2.11% chance of exploitation in the next 30 days, higher than 81% of all scored CVEs (FIRST EPSS, 2026-11-08).
Exploits and checks
- gitlab.com https://gitlab.com/eLeN3Re/cve-2020-9472 referenced PoC, tagged "exploit" by a source, unverified
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| NVD | 3.1 | 6.5 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N |
| NVD | 2.0 | 4.0 | AV:N/AC:L/Au:S/C:N/I:P/A:N |
| GitHub | 3.1 | 6.5 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N |
Affected packages
| ecosystem | package | affected | fixed in |
|---|---|---|---|
| nuget | UmbracoCms | <8.5.4 |
8.5.4 |
Classification
- Weakness
-
- CWE-434 Unrestricted Upload of File with Dangerous Type
References
-
gitlab.com
/eLeN3Re/cve-2020-9472
web, exploit, third-party-advisory
-
nvd.nist.gov
/vuln/detail/CVE-2020-9472
advisory
Sources
- CVE List CVE-2020-9472
- GitHub Advisory GHSA-j66f-h9hm-975m
- NVD CVE-2020-9472
Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.