What is CVE-2026-46339?

CVE-2026-46339 is a critical-severity vulnerability in Decolua 9router, classified under OS Command Injection. CVSS score: 10.0/10. Published 2026-07-15.

How severe is CVE-2026-46339?

Critical severity. CVSS v3 base score is 10.0 out of 10.

RCE in Decolua 9router

CVE-2026-46339

9Router is an AI router & token saver. From 0.4.30 until 0.4.37, 9Router's src/proxy.js middleware did not protect /api/cli-tools/* and /api/mcp/*, allowing unauthenticated registration of customPlugins through src/app/api/cli-tools/cowork…

Vulnerability class: Command Injection (OS Command Injection)

CVSS v3 metric

CVSS v3 base score 10.0 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H.

Affected products

Decolua 9router — versions >= 0.4.30, < 0.4.37

Weakness classification (CWE)

CWE-78 — OS Command Injection
CWE-306 — Missing Authentication for Critical Function

References

security-advisories@github.com (x_refsource_CONFIRM)
security-advisories@github.com (x_refsource_MISC)

Frequently asked questions

What is CVE-2026-46339?: CVE-2026-46339 is a critical-severity vulnerability in Decolua 9router, classified under OS Command Injection. CVSS score: 10.0/10. Published 2026-07-15.
How severe is CVE-2026-46339?: Critical severity. CVSS v3 base score is 10.0 out of 10.