usmannasir CyberPanel up to 1.9.1 File Manager filemanager/views.py compress listOfFiles/basePath/compressedFileName path traversal

Summaryinfo

A vulnerability was found in usmannasir CyberPanel up to 1.9.1. It has been classified as problematic. Impacted is the function compress of the file filemanager/views.py of the component File Manager. Performing a manipulation of the argument listOfFiles/basePath/compressedFileName results in path traversal. This vulnerability is cataloged as CVE-2026-79306. It is possible to initiate the attack remotely. There is no exploit available.

Detailsinfo

A vulnerability was found in usmannasir CyberPanel up to 1.9.1. It has been classified as problematic. This affects the function compress of the file filemanager/views.py of the component File Manager. The manipulation of the argument listOfFiles/basePath/compressedFileName with an unknown input leads to a path traversal vulnerability. CWE is classifying the issue as CWE-22. The product uses external input to construct a pathname that is intended to identify a file or directory that is located underneath a restricted parent directory, but the product does not properly neutralize special elements within the pathname that can cause the pathname to resolve to a location that is outside of the restricted directory. This is going to have an impact on confidentiality. The summary by CVE is:

CyberPanel v1.9.1 contains a path traversal vulnerability in the compress method exposed through the /filemanager/controller endpoint. An authenticated remote attacker with ownership of any configured domain can supply absolute or otherwise out-of-scope file paths in the listOfFiles JSON property, together with attacker-controlled basePath and compressedFileName values, in a method=compress request. Because the application validates only domain ownership and does not canonicalize or restrict these paths to the authorized site directory, the backend appends them to zip or tar archive commands and executes them as the website externalApp user, allowing disclosure of arbitrary readable files through the generated archive.

The advisory is shared at github.com. This vulnerability is uniquely identified as CVE-2026-79306 since 08/25/2026. The exploitability is told to be easy. It is possible to initiate the attack remotely. Technical details are known, but no exploit is available. The price for an exploit might be around USD $0-$5k at the moment (estimation calculated on 09/23/2026). MITRE ATT&CK project uses the attack technique T1006 for this issue.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

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Productinfo

Vendor

• usmannasir

Name

• CyberPanel

Version

• 1.9.0
• 1.9.1

Website

• Product: https://github.com/usmannasir/cyberpanel/

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