Summary
| Parameter | Value |
|---|---|
| CVE ID | CVE-2026-63732 |
| Alert Source | GitHub Advisory - Critical Vulnerability |
| CVE Publication Year | 2026 |
| Date Published | 2026-07-24 |
| Vendor | 9router |
| Product | 9router |
| CVSS Score | 9.9 (critical) |
| EPSS Score | No data |
| CISA KEV | No |
| Ransomware | Not confirmed |
Vulnerability Description
9router 0.4.59 (fixed in 0.4.60) contains a chain of vulnerabilities: a hardcoded default password (123456) that authenticates any fresh installation, a bypass of the LOCAL_ONLY network gate via a spoofed Host header, and unvalidated arguments passed to child_process.spawn() when registering MCP plugins. A remote, unauthenticated attacker can log in with the default credential, spoof the Host header to reach local-only routes, and register a malicious MCP plugin (e.g. node -e
Required Actions
Apply vendor patches or mitigations as soon as available.
Who Is Affected?
This vulnerability affects 9router by 9router. Check whether your organization uses this software and whether it requires an update.
Sources
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