CVE-2026-79748
- Source
- https://cve.org/CVERecord?id=CVE-2026-79748
- Import Source
- https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-79748.json
- JSON Data
- https://api.osv.dev/v1/vulns/CVE-2026-79748
- Aliases
-
- GHSA-mx89-jjx9-gjr8
- Published
- 2026-08-31T17:55:08.740Z
- Modified
- 2026-09-02T03:47:20.927327191Z
- Severity
-
- 9.9 (Critical) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H CVSS Calculator
- Summary
- MCPHub: Authenticated non-admin user achieves RCE via POST /api/servers (missing authorization on stdio command/args)
- Details
-
MCPHub is a unified hub for centrally managing and dynamically orchestrating multiple MCP servers/APIs into separate endpoints with flexible routing strategies. Prior to version 0.12.15, the POST /api/servers and PUT /api/servers/:name endpoints in MCPHub create/update MCP server configurations and then immediately spawn the configured stdio process via child_process.spawn. Authentication is required, but there is no authorization check restricting these endpoints to admins, and there is no allowlist/sanitization on the command and args fields. As a result, any authenticated non-admin user can submit a server configuration with command:"/bin/sh" (or any other binary) and arbitrary args, causing MCPHub to execute the attacker-controlled process as the MCPHub server's OS user (commonly root in the published Docker image and in npx/systemd deployments). This issue has been patched in version 0.12.15.
- Database specific
{ "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/79xxx/CVE-2026-79748.json", "cna_assigner": "GitHub_M", "cwe_ids": [ "CWE-862" ] }- References
-
- https://github.com/samanhappy/mcphub/releases/tag/v0.12.15
- https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/79xxx/CVE-2026-79748.json
- https://github.com/samanhappy/mcphub/security/advisories/GHSA-mx89-jjx9-gjr8
- https://nvd.nist.gov/vuln/detail/CVE-2026-79748
- https://github.com/samanhappy/mcphub/pull/770