{"schema":"threatline.record/2","record":{"id":"CVE-2026-111385","aliases":["GHSA-rj3w-jrj7-x7c3"],"summary":"Nezha 2.1.0 before 2.3.15 Host Header Injection via MCP Transfer Tools","details":"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.","categories":["Unclassified"],"product":"nezha","vendor":"nezhahq","ecosystem":null,"affected_ranges":[{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-111385","source_modified_at":"2026-10-21T02:07:31.134Z","fetched_at":"2026-10-23T18:45:31.882637Z","product":"nezha","vendor":"nezhahq","versions":[{"version":"2.1.0","status":"affected","versionType":"semver","lessThan":"2.3.15"},{"version":"2.3.15","status":"unaffected","versionType":"semver"}],"defaultStatus":"unaffected"}],"fixed_versions":[{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-111385","source_modified_at":"2026-10-21T02:07:31.134Z","fetched_at":"2026-10-23T18:45:31.882637Z","package":{"name":"nezha","ecosystem":null},"version":"2.3.15","basis":"first unaffected version stated in the CVE record"}],"cvss":6.3,"severity":"Medium","kev":{"listed":false},"epss":{"probability":0.00194,"percentile":0.08614,"score_date":"2026-10-23"},"published_at":"2026-10-16T01:17:54.057Z","modified_at":"2026-10-21T02:07:31.134Z","provenance":[{"source":"CVE List","url":"https://www.cve.org/CVERecord?id=CVE-2026-111385","fetched_at":"2026-10-23T18:45:31.882637Z","source_modified_at":"2026-10-21T02:07:31.134Z"},{"source":"EPSS","url":"https://api.first.org/data/v1/epss?cve=CVE-2026-111385","fetched_at":"2026-10-23T18:42:43.628194Z","source_modified_at":"2026-10-23"}],"sources":["CVE List","EPSS"],"references":[{"source":"CVE List","url":"https://github.com/nezhahq/nezha/security/advisories/GHSA-rj3w-jrj7-x7c3","tags":["exploit"]},{"source":"CVE List","url":"https://github.com/nezhahq/nezha/commit/36b742a7e9a81ed782363dd19efd77b7030fbd0f","tags":["patch"]},{"source":"CVE List","url":"https://github.com/nezhahq/nezha/commit/c726930833937a0aebb2a924064f236faea889f6","tags":["patch"]},{"source":"CVE List","url":"https://www.vulncheck.com/advisories/nezha-2.1.0-before-2.3.15-host-header-injection-via-mcp-transfer-tools","tags":["third-party-advisory"]}],"locations":[],"motoko_assessment":{"status":"requires_architecture_review","automatic_remediation":false},"cve_state":"PUBLISHED","cvss_source":"CVE List","ssvc":{"exploitation":"poc","automatable":"no","technical_impact":"partial","assessed_at":"2026-10-21T02:06:56.703172Z"},"classification":{"method":"product-first software-layer rules","rules_version":"2.1","matched_on":null,"confidence":"unknown","reviewed":false},"change_timestamp":"2026-10-21T02:07:31.134Z","content_hash":"9c6f1a62a91a7845589de271f24bd1c7a0aab074873a31108dc946e7df8d0df3"}}