CVE-2020-27385

Incorrect Access Control in the FileEditor (/Admin/Views/FileEditor/) in FlexDotnetCMS before v1.5.11 allows an authenticated remote attacker to read and write to existing files outside the web root. The files can be accessed via directory traversal, i.e., by entering a .. (dot dot) path such as ..\..\..\..\..\<file> in the input field of the FileEditor. In FlexDotnetCMS before v1.5.8, it is also possible to access files by specifying the full path (e.g., C:\<file>). The files can then be edited via the FileEditor.

• CWE-22

• https://blog.vonahi.io/whats-in-a-re-name/Exploit, Third Party Advisory
• https://github.com/MacdonaldRobinson/FlexDotnetCMS/releases/tag/v1.5.11Release Notes, Third Party Advisory
• https://blog.vonahi.io/whats-in-a-re-name/Exploit, Third Party Advisory
• https://github.com/MacdonaldRobinson/FlexDotnetCMS/releases/tag/v1.5.11Release Notes, Third Party Advisory

Published

Nov 12, 2020

Last Modified

Jun 17, 2026

Status

Modified

• How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
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