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Vulnerability record · CVE-2023-39966 · published 10 August 2023

CVE-2023-39966: Fit2cloud 1panel missing authorization vulnerability

Fit2cloud · 1panel

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.

9.8 CVSS 3.1 Critical EPSS 0.83% · top 44.0% CWE-862 · Missing authorization
9.8CVSS 3.1 base score
0.83%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
4References, 2 tagged exploit
17 Jun 2026Last modified by NVD

Description

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.

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

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://github.com/1Panel-dev/1Panel/releases/tag/v1.5.0 ProductRelease Notes
https://github.com/1Panel-dev/1Panel/security/advisories/GHSA-hf7j-xj3w-87g4 ExploitVendor Advisory
https://github.com/1Panel-dev/1Panel/releases/tag/v1.5.0 ProductRelease Notes
https://github.com/1Panel-dev/1Panel/security/advisories/GHSA-hf7j-xj3w-87g4 ExploitVendor Advisory

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

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Source: NIST National Vulnerability Database (record CVE-2023-39966), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.