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CVE-2020-5811

Description

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.

POC

Reference

- http://packetstormsecurity.com/files/163965/Umbraco-CMS-8.9.1-Traversal-Arbitrary-File-Write.html

- https://www.tenable.com/security/research/tra-2020-59

Github

- https://github.com/ARPSyndicate/cvemon