CVE-2023-39966

Name: CVE-2023-39966
Creator: NVD / NIST
Published: 2023-08-10T18:15:11.55+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

CRITICALCVSS 9.8/10EPSS 0.70%

Last modified Jun 17, 2026

CVE-2023-39966 is a critical-severity vulnerability rated 9.8/10 on the CVSS scale. 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. EPSS estimates a 0.70% chance of exploitation in the next 30 days.

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.

Metrics

CVSS 3.1

9.8/10

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

EPSS Probability

0.70%

48.3th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-862

Affected Software

Vendor	Product	Versions
Fit2cloud	1panel	1.4.3

References

https://github.com/1Panel-dev/1Panel/releases/tag/v1.5.0Product, Release Notes
https://github.com/1Panel-dev/1Panel/security/advisories/GHSA-hf7j-xj3w-87g4Exploit, Vendor Advisory
https://github.com/1Panel-dev/1Panel/releases/tag/v1.5.0Product, Release Notes
https://github.com/1Panel-dev/1Panel/security/advisories/GHSA-hf7j-xj3w-87g4Exploit, Vendor Advisory

Timeline

Published: Aug 10, 2023
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2023-39966?

How severe is CVE-2023-39966?

CVE-2023-39966 has a CVSS score of 9.8/10 (CRITICAL severity). The EPSS model estimates a 0.70% probability of exploitation in the next 30 days.

How do I fix CVE-2023-39966?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2023-39966?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST