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CRITICAL

CVE-2023-39966

CVSS v3

9.8

CRITICAL

EPSS Score

0.8 %

exploit probability, as of 2026-10-18

CISA KEV

No

known exploited

Exploitation

—

SSVC status

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Affected and fixed versions

Packages from OSV.dev and products from the vendors' CSAF advisories.

version not verifiedVersions not verified: read as OSV.dev and the vendors publish them, not checked against each vendor's release list.

Packages

  • github.com/1Panel-dev/1PanelGofrom 1.4.3 · fixed in 1.5.0

Full record on 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.

Technical details

Published
2023-08-10

Frequently asked questions

What is CVE-2023-39966?

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.

Is CVE-2023-39966 actively exploited?

Active exploitation of CVE-2023-39966 has not been confirmed. Its EPSS score was 0.8% on 2026-10-18, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2023-39966?

CVE-2023-39966 has a CVSS v3 base score of 9.8 (CRITICAL severity).

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