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CVE-2026-59800— 9Router < 0.4.44 - OS Command Injection via sudoPassword Parameter in Tailscale Install Endpoint

Quick assessment

Affected
decolua 9router
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.

9Router 9Router是9Router公司的一款人工智能路由器。 9Router 0.4.44之前版本存在命令注入漏洞，该漏洞源于未授权POST /api/tunnel/tailscale-install端点中os命令注入漏洞，其中sudoPassword字段被写入sudo -S sh子进程的标准输入，导致远程未授权攻击者执行任意OS命令。

CVSS 9.8 · Critical EPSS 1.34% · P69

Affected Version Matrix 2

VendorProduct Version RangeStatus
decolua 9router < 0.4.44 affected
0.4.44 unaffected
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I. Basic Information for CVE-2026-59800

Vulnerability Information
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Vulnerability Title
9Router < 0.4.44 - OS Command Injection via sudoPassword Parameter in Tailscale Install Endpoint
Source: CVE Program / CVE List V5
Vulnerability Description
9Router before 0.4.44 contains an OS command injection vulnerability in the unauthenticated POST /api/tunnel/tailscale-install endpoint (this route is not covered by the dashboard middleware matcher, so no authorization check is applied). The sudoPassword field from the request body is written to the stdin of a 'sudo -S sh' child process. When sudo does not prompt for a password (the process runs as root, NOPASSWD is configured, or a recent sudo timestamp cache exists), the sudoPassword value is interpreted by sh as a shell command, allowing a remote unauthenticated attacker to execute arbitrary OS commands. Exploitation evidence was first observed by the Shadowserver Foundation on 2026-07-04 (UTC).
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
OS命令中使用的特殊元素转义处理不恰当(OS命令注入)
Source: CVE Program / CVE List V5
Vulnerability Title
9Router 命令注入漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
9Router 9Router是9Router公司的一款人工智能路由器。 9Router 0.4.44之前版本存在命令注入漏洞，该漏洞源于未授权POST /api/tunnel/tailscale-install端点中os命令注入漏洞，其中sudoPassword字段被写入sudo -S sh子进程的标准输入，导致远程未授权攻击者执行任意OS命令。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
decolua 9router 0 ~ 0.4.44 -

II. Public POCs for CVE-2026-59800

# POC Description Source Link Shenlong Link
AI-Generated POC Verified env Premium
Qwen3.6-35B-A3B · 8764 chars
Pro+ exclusive includes:
Vulnerability reproduction recording (real sandbox build + trigger, exclusive)
In-depth vulnerability mechanism
Trigger conditions & impact
Full executable POC code
Exploit chain & mitigation
POC zip download
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III. Intelligence Information for CVE-2026-59800

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Vendor Advisories for CVE-2026-59800 (2)

IV. Related Vulnerabilities

Same product: 9router
Same vendor: decolua
Same weakness: CWE-78

V. Comments for CVE-2026-59800

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