What is CVE-2020-9471?

CVE-2020-9471 is a high-severity vulnerability in Umbraco Umbraco_cms, classified under Unrestricted Upload of File with Dangerous Type. CVSS score: 8.8/10. Published 2020-03-16.

How severe is CVE-2020-9471?

High severity. CVSS v3 base score is 8.8 out of 10.

Is CVE-2020-9471 known to be exploited?

4 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

Arbitrary file upload in Umbraco Umbraco_cms

CVE-2020-9471

Umbraco Cloud 8.5.3 allows an authenticated file upload (and consequently Remote Code Execution) via the Install Packages functionality.

Vulnerability class: Unrestricted File Upload

EPSS: 0.023 (81.0th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.

Affected products

Umbraco Umbraco_cms — versions 8.5.3
N/a — versions n/a

Weakness classification (CWE)

CWE-434 — Unrestricted Upload of File with Dangerous Type

Public proof-of-concept exploits

References

cve@mitre.org (Exploit, Third Party Advisory, x_refsource_MISC)

Frequently asked questions

What is CVE-2020-9471?: CVE-2020-9471 is a high-severity vulnerability in Umbraco Umbraco_cms, classified under Unrestricted Upload of File with Dangerous Type. CVSS score: 8.8/10. Published 2020-03-16.
How severe is CVE-2020-9471?: High severity. CVSS v3 base score is 8.8 out of 10.
Is CVE-2020-9471 known to be exploited?: 4 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.