CVE-2026-63732 (GCVE-0-2026-63732)
Vulnerability from cvelistv5 – Published: 2026-07-23 21:16 – Updated: 2026-07-23 21:16
VLAI
EPSS
VEX
Title
9router before 0.4.60 Remote Code Execution via default password
Summary
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 <payload>) to achieve arbitrary code execution on the host operating system when the plugin's SSE endpoint is triggered.
Severity
9.9 (Critical)
CWE
- CWE-78 - Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://github.com/decolua/9router/security/advis… | vendor-advisory |
| https://www.vulncheck.com/advisories/9router-befo… | third-party-advisory |
Impacted products
Date Public
2026-07-03 00:00
Credits
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}
],
"metrics": [
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"problemTypes": [
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"descriptions": [
{
"cweId": "CWE-78",
"description": "Improper Neutralization of Special Elements used in an OS Command (\u0027OS Command Injection\u0027)",
"lang": "en",
"type": "CWE"
}
]
}
],
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"shortName": "VulnCheck"
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"references": [
{
"name": "GitHub Security Advisory (GHSA-4922-8r65-fq26)",
"tags": [
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],
"url": "https://github.com/decolua/9router/security/advisories/GHSA-4922-8r65-fq26"
},
{
"name": "VulnCheck Advisory: 9router before 0.4.60 Remote Code Execution via default password",
"tags": [
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],
"url": "https://www.vulncheck.com/advisories/9router-before-remote-code-execution-via-default-password"
}
],
"title": "9router before 0.4.60 Remote Code Execution via default password",
"x_generator": {
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"datePublished": "2026-07-23T21:16:46.266Z",
"dateReserved": "2026-07-18T12:19:06.903Z",
"dateUpdated": "2026-07-23T21:16:46.266Z",
"state": "PUBLISHED"
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"date": "2026-07-25",
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"percentile": "0.50969"
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}
}
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Experimental. This forecast is provided for visualization only and may change without notice. Do not use it for operational decisions.
Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.
Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
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