CVE-2026-62312: CWE-78: Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection') in decolua 9router
9Router versions prior to 0.5.2 contain an OS command injection vulnerability that allows a remote authenticated attacker to execute arbitrary code on the host system. This occurs by bypassing localhost-only route restrictions via the Host header and passing unvalidated arguments to child_process.spawn() through the MCP plugin interface. The vulnerability is fixed in version 0.5.2.
AI Analysis
Technical Summary
CVE-2026-62312 is an OS command injection vulnerability in decolua's 9Router product before version 0.5.2. An attacker with authentication can bypass localhost-only route protections by manipulating the Host header and supply unvalidated arguments to the MCP plugin system, which are passed directly to child_process.spawn(). This allows execution of arbitrary commands on the host operating system via the /api/mcp//sse endpoint. The issue is resolved in version 0.5.2.
Potential Impact
Successful exploitation enables a remote authenticated attacker to execute arbitrary code on the host operating system, potentially leading to full system compromise with confidentiality, integrity, and availability impacts as indicated by the CVSS score of 8.8 (high severity).
Mitigation Recommendations
Upgrade 9Router to version 0.5.2 or later, where this vulnerability is fixed. No other official remediation or temporary fixes are documented. Patch status is confirmed fixed in 0.5.2.
CVE-2026-62312: CWE-78: Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection') in decolua 9router
Description
9Router versions prior to 0.5.2 contain an OS command injection vulnerability that allows a remote authenticated attacker to execute arbitrary code on the host system. This occurs by bypassing localhost-only route restrictions via the Host header and passing unvalidated arguments to child_process.spawn() through the MCP plugin interface. The vulnerability is fixed in version 0.5.2.
CVSS v3.1
Score 8.8high
Affected software
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Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-62312 is an OS command injection vulnerability in decolua's 9Router product before version 0.5.2. An attacker with authentication can bypass localhost-only route protections by manipulating the Host header and supply unvalidated arguments to the MCP plugin system, which are passed directly to child_process.spawn(). This allows execution of arbitrary commands on the host operating system via the /api/mcp//sse endpoint. The issue is resolved in version 0.5.2.
Potential Impact
Successful exploitation enables a remote authenticated attacker to execute arbitrary code on the host operating system, potentially leading to full system compromise with confidentiality, integrity, and availability impacts as indicated by the CVSS score of 8.8 (high severity).
Mitigation Recommendations
Upgrade 9Router to version 0.5.2 or later, where this vulnerability is fixed. No other official remediation or temporary fixes are documented. Patch status is confirmed fixed in 0.5.2.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- GitHub_M
- Date Reserved
- 2026-07-13T19:27:58.314Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 6a57f59968715ace43783985
Added to database: 07/15/2026, 21:03:21 UTC
Last enriched: 07/15/2026, 21:17:28 UTC
Last updated: 07/16/2026, 03:03:00 UTC
Views: 10
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