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CVE-2026-67614— CyberPanel < 3.0.0 Hard-coded JWT Secret Authentication Bypass via WebTerminal

Quick assessment

Affected
usmannasir cyberpanel
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.

CyberPanel 3.0.0 之前的版本中存在一个硬编码 JWT 密钥漏洞，该漏洞位于 WebTerminal FastAPI SSH 服务中。攻击者无需身份验证即可伪造有效的认证令牌，并通过 WebSocket 在 8888 端口上获取交互式 root shell。攻击者可以构造一个使用硬编码密钥签名的伪造 JWT，指定 ssh_user=root，从而无需任何有效凭据即可认证到终端服务，并获得 root shell 权限。

CVSS 9.8 · Critical EPSS 0.96% · P60

Affected Version Matrix 1

VendorProduct Version RangeStatus
usmannasir cyberpanel < 3.0.0 affected
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I. Basic Information for CVE-2026-67614

Vulnerability Information
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Vulnerability Title
CyberPanel < 3.0.0 Hard-coded JWT Secret Authentication Bypass via WebTerminal
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
使用硬编码的凭证
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
usmannasir cyberpanel 0 ~ 3.0.0 -

II. Public POCs for CVE-2026-67614

# POC Description Source Link Shenlong Link
AI-Generated POC Verified env Premium
Reproduced successfully in a real sandbox · Below is the actual recording of building the environment and exploiting the vulnerability.
Success marker: VULNERABLE: unauthenticated forged-JWT gave a root shell; exfiltrated proof token PROOF_8d031b6a29a5c4b0 from /flag.txt via WebTerminal
Reproduction recording is a Pro+ exclusive
Watch the full sandbox build + live exploit recording for this CVE. Limited-time ¥499/mo.
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claude_code · 13246 chars
GitHub 复现环境（可 clone 直接跑）
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III. Intelligence Information for CVE-2026-67614

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Vendor Advisories for CVE-2026-67614 (2)

Vendor Pages for CVE-2026-67614 (1)

IV. Related Vulnerabilities

Same product: cyberpanel
Same vendor: usmannasir
Same weakness: CWE-798

V. Comments for CVE-2026-67614

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