Vulnerability

[ Description ]Official description

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.

[ Fixes ]Fixes and patches

No fix or interim patch is linked from our sources yet. Check the vendor references below and limit exposure of affected systems until a fix is available.

[ Advisories ]Government CERT advisories

• BSI CERT-Bund23 Sep 2026WID-SEC-2026-3561

  CyberPanel: Multiple vulnerabilities allow information disclosure Translated from German

  CVE-2026-79304CVE-2026-79306

[ References ]References

• github.com/lichoin/TraceLoom/blob/main/CVEs/CVE-2026-79306.md
• github.com/usmannasir/cyberpanel/blob/v1.9.1/CyberCP/secMiddleware.py
• github.com/usmannasir/cyberpanel/blob/v1.9.1/filemanager/filemanager.py
• github.com/usmannasir/cyberpanel/blob/v1.9.1/filemanager/filemanager.py
• github.com/usmannasir/cyberpanel/blob/v1.9.1/filemanager/views.py