CVE-2026-49353

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 v3.1

7.5 HIGHCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:L/I:H/A:N

CVSS v3.1

7.5 HIGHCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:L/I:H/A:N

EPSS

0.36% chance of exploitation in the next 30 days, 29th percentile

Published

2026-07-15

Updated

2026-07-16

Proof-of-concept exploits (1)

• advisories/GHSA-6g2f-w7g3-77vf

References

• CVE Record
• NVD entry

Related

• CVE-2026-49352
• CVE-2026-49358
• CVE-2026-4935
• CVE-2026-49359
• CVE-2026-49345
• CVE-2026-49365