CVE-2026-94031 Details
Description
A vulnerability was detected in 0-Gaurav-0 nexus-mcp aed0026e7ac1f23dc940e46e9fd3a2da6904f914. Affected by this issue is the function child_process.exec of the file src/auth/browser.ts of the component nexus_reauth MCP tool. The manipulation of the argument url results in command injection. The attack may be performed from remote. The exploit is now public and may be used. This product utilizes a rolling release system for continuous delivery, and as such, version information for affected or updated releases is not disclosed. The project was informed of the problem early through an issue report but has not responded yet.
A command injection vulnerability exists in the 'nexus-mcp' project by '0-Gaurav-0', specifically in the 'nexus_reauth' tool. This vulnerability allows an attacker to inject arbitrary operating system commands that are executed with the same privileges as the 'nexus-mcp' process. The issue arises from the 'child_process.exec' function in 'src/auth/browser.ts', where user-controlled URL arguments are improperly sanitized before being executed as shell commands. As a result, an attacker could exploit this to execute commands remotely, potentially leading to unauthorized data access, modification, or even a complete system compromise.
Replace 'child_process.exec' with 'execFile' or 'spawn', and validate the URL argument to allow only 'http:' and 'https:' schemes.
Metrics
CVSS 4.0 Severity and Vector Strings:
VolerionCVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
Volerion
Assessed Sep 20, 2026CISA-ADP
Assessed Sep 21, 2026References to Advisories, Solutions, and Tools
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| URL | Source(s) | Tag(s) |
|---|---|---|
| https://github.com/0-Gaurav-0/nexus-mcp/ | [email protected] | Source CodeVendor |
| https://github.com/0-Gaurav-0/nexus-mcp/issues/1 | [email protected] | ExploitIssue TrackingTechnical DescriptionVendor |
| https://github.com/Xh1Xxhg/public_exp/issues/1 | [email protected] | ExploitIssue TrackingTechnical Description |
| https://vuldb.com/cve/CVE-2026-94031 | [email protected] | AdvisoryPermission Required |
| https://vuldb.com/submit/945942 | [email protected] | Issue TrackingPermission Required |
| https://vuldb.com/vuln/407959 | [email protected] | AdvisoryPermission Required |
| https://vuldb.com/vuln/407959/cti | [email protected] | Content Wall |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-74 | Improper Neutralization of Special Elements in Output Used by a Downstream Component ('Injection') | [email protected] |
| CWE-77 | Improper Neutralization of Special Elements used in a Command ('Command Injection') | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| 0-Gaurav-0 nexus-mcp | < aed0026e7ac1f23dc940e46e9fd3a2da6904f914 |
CPE
Remediation
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Change History
2 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Sep 21, 2026 | CVE Modified | CISA-ADP |
| Sep 20, 2026 | New CVE Received | [email protected] |