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

Quick assessment

Affected
1Panel-dev 1Panel
Exploitation
Public or AI PoC available; prioritize validation
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

1Panel是中国1panel社区的一个开源的Linux服务器运维管理面板。 1Panel 1.4.3版本存在安全漏洞，该漏洞源于缺乏对参数的过滤。

CVSS 7.5 · High EPSS 0.83% · P56
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I. Basic Information for CVE-2023-39966

Vulnerability Information
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Vulnerability Title
1Panel arbitrary file write vulnerability exists in the background
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
授权机制缺失
Source: CVE Program / CVE List V5
Vulnerability Title
1Panel 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
1Panel是中国1panel社区的一个开源的Linux服务器运维管理面板。 1Panel 1.4.3版本存在安全漏洞，该漏洞源于缺乏对参数的过滤。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
1Panel-dev 1Panel = 1.4.3 -

II. Public POCs for CVE-2023-39966

# POC Description Source Link Shenlong Link
AI-Generated POC Verified env Premium
Qwen3.6-35B-A3B · 12797 chars
Pro+ exclusive includes:
Vulnerability reproduction recording (real sandbox build + trigger, exclusive)
In-depth vulnerability mechanism
Trigger conditions & impact
Full executable POC code
Exploit chain & mitigation
POC zip download
100+ AI POC generations per month

III. Intelligence Information for CVE-2023-39966

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Vendor Advisories for CVE-2023-39966 (1)

Other References for CVE-2023-39966 (1)

Same Patch Batch · 1Panel-dev · 2023-08-10 · 3 CVEs total

CVE-2023-39964 7.5 HIGH 1Panel O&M management panel has a background arbitrary file reading vulnerability
CVE-2023-39965 6.5 MEDIUM 1Panel Unauthorized access in Backend

IV. Related Vulnerabilities

Same product: 1Panel
Same vendor: 1Panel-dev
Same weakness: CWE-862

V. Comments for CVE-2023-39966

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