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Advisories

CyberPanel < 3.0.0 Hard-coded JWT Secret Authentication Bypass via WebTerminal

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severity
critical
date
Affecting

  • CyberPanel < 3.0.0

CWE
  • CWE-798 Use of Hard-coded Credentials
CVSS
9.3
CVSS V4 Vector
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
Credit
Deniz Mert
Description
CyberPanel before 3.0.0 contains a hard-coded JWT secret vulnerability in the WebTerminal FastAPI SSH service that allows unauthenticated remote attackers to forge valid authentication tokens and obtain an interactive root shell via WebSocket on port 8888. Attackers can craft a forged JWT signed with the hardcoded secret value, specifying ssh_user=root, to authenticate to the terminal service without any valid credentials and receive a root shell.

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