CVE-2023-39966: FIT2CLOUD 1panel

Critical severity, CVSS 9.8. EPSS: 0.8% chance of exploitation in the next 30 days.

1Panel is an open source Linux server operation and maintenance management panel. In version 1.4.3, an arbitrary file write vulnerability could lead to direct control of the server. In the `api/v1/file.go` file, there is a function called `SaveContentthat,It `recieves JSON data sent by users in the form of a POST request. And the lack of parameter filtering allows for arbitrary file write operations. Version 1.5.0 contains a patch for this issue.

Affected products

Published 2023-08-10. Last modified 2026-06-17.