{"id":"CVE-2026-111385","revision":"9200bd96e2644491b47e4a9e54e8df39","records":[{"revision":"9200bd96e2644491b47e4a9e54e8df39","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-111385","aliases":[],"title":"Nezha 2.1.0 before 2.3.15 Host Header Injection via MCP Transfer Tools","description":"Nezha from 2.1.0 before 2.3.15 contains a host header injection vulnerability in mintTransferTool that builds fs.download_url and fs.upload_url transfer URLs from the unvalidated Host header. Attackers who control the Host header seen on a victim's MCP request can redirect file uploads or capture one-time download tokens and replay them to exfiltrate files.","state":0,"publishedAt":"2026-10-16T01:17:54.057+00:00","modifiedAt":"2026-10-21T02:07:31.134+00:00","affected":[{"ecosystem":"Vendor product","name":"nezha","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"vendor\": \"nezhahq\",\n                    \"product\": \"nezha\",\n                    \"defaultStatus\": \"unaffected\",\n                    \"packageURL\": \"pkg:golang/github.com/nezhahq/nezha\",\n                    \"versions\": [\n                        {\n                            \"version\": \"2.1.0\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"semver\",\n                            \"lessThan\": \"2.3.15\"\n                        },\n                        {\n                            \"version\": \"2.3.15\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        }\n                    ]\n                }"}],"metrics":[{"system":"CVSS 4.0","vector":"CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N","score":6.3,"severity":"MEDIUM"},{"system":"CVSS 3.1","vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N","score":4.8,"severity":"MEDIUM"}],"references":["https://github.com/nezhahq/nezha/security/advisories/GHSA-rj3w-jrj7-x7c3","https://github.com/nezhahq/nezha/commit/36b742a7e9a81ed782363dd19efd77b7030fbd0f","https://github.com/nezhahq/nezha/commit/c726930833937a0aebb2a924064f236faea889f6","https://www.vulncheck.com/advisories/nezha-2.1.0-before-2.3.15-host-header-injection-via-mcp-transfer-tools"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-111385","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-111385","identifiers":["CVE-2026-111385"]},"retained":false,"historicalAffected":[]}],"coverage":[]}