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CVE-2020-5811

MediumPublished

An authenticated path traversal vulnerability exists during package installation in Umbraco CMS <= 8.9.1 or current, which could result in arbitrary files...

Published: Dec 30, 2020
Updated: Aug 4, 2024
Assigning CNA: tenable
Evidence observed: Aug 31, 2021

Primary CVSS

6.5/ 10Medium

nvd · CVSS 3.1

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N

EPSS probability estimate

9.4%

Low · next 30 days

Percentile: 95.2%
Model date: Sep 21, 2026

EPSS is a statistical estimate, not a certainty or a measure of impact. Combine it with CVSS, KEV status, exposure and your environment.

Summary

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.

Sources

Umbraco CMS 8.9.1 - Directory TraversalExploit
BitTheByte · aspx · Aug 31, 2021

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