CVE-2023-39965 1Panel Unauthorized access in Backend

What is CVE-2023-39965?

CVE-2023-39965 is a medium-severity missing authorization vulnerability in 1Panel-dev 1Panel, published on 10 Aug 2023. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link.

Official description

1Panel is an open source Linux server operation and maintenance management panel. In version 1.4.3, authenticated attackers can download arbitrary files through the API interface. This code has unauthorized access. Attackers can freely download the file content on the target system. This may cause a large amount of information leakage. Version 1.5.0 has a patch for this issue.

Weakness: CWE-863

Which versions are affected by CVE-2023-39965?

3 open source packages ship an affected version, including github.com/1Panel-dev/1Panel. It affects 1 product.

Products include Fit2cloud 1panel.

How do I fix CVE-2023-39965?

Upgrade github.com/1Panel-dev/1Panel to 1.5.0 or later.

Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.

Is CVE-2023-39965 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2023-39965 exists.

Other vulnerabilities in 1Panel-dev 1Panel

• CVE-2024-39911 1Panel SQL injection Critical 10.0
• CVE-2024-39907 a sqlinjection in 1Panel Critical 9.8
• CVE-2025-56413 Command injection in n/a High 8.8
• CVE-2025-54424 1Panel Agent Bypasses Certificate Verification Leading to Arbitrary Command Execution High 8.1
• CVE-2025-66507 1Panel – CAPTCHA Bypass via Client-Controlled Flag High 7.5

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as GHSA-85cf-gj29-f555, GO-2023-2005.