High 7.5Published Jul 15, 2026

CVE-2026-493539Router: Local-Only Access Gate Bypass in 9router via Host Header SpoofING

Updated under an hour ago (Oct 26, 2026, 11:20 PM ET)

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It affects decolua 9router. Add what you run to find out whether that includes you.

No exploitation reported and no EPSS estimate yet.

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Every CVE for decolua 9router

Exploited in the last 30 days

9Router is an AI router & token saver. In 0.4.45 and earlier, 9Router's src/dashboardGuard.js local-only access gate used Host and Origin headers in isLocalRequest() to protect /api/mcp/*, /api/tunnel/*, and /api/cli-tools/*, allowing header spoofing in reverse proxy or tunnel deployments to reach MCP child process stdin paths.

CVSS: 7.5 HIGH (v3.1, CNA)CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:L/I:H/A:N
Weakness (CWE): CWE-290
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: GitHub_M
NVD analysis: Deferred
Record last updated: Jul 16, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

decolua 9router decolua:9router (from the name)	through 0.4.45	CNA record

References

References

https://github.com/decolua/9router/security/advisories/GHSA-6g2f-w7g3-77vf	x-refsource-confirm
https://github.com/decolua/9router/commit/5e1c1261368e06dced1cbc650684561b2c8844db	x-refsource-misc
https://github.com/decolua/9router/commit/bb86808582067e4fc6f004508a919efb9970d1d5	x-refsource-misc
https://github.com/decolua/9router/releases/tag/v0.4.46	x-refsource-misc

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.