80 行
3.3 KiB
JSON
80 行
3.3 KiB
JSON
{
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"canonical_id": "fastify--CVE-2026-3419",
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"system_id": "fastify",
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"display_name": "Fastify",
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"category": "frameworks",
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"advisory_mode": "core",
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"title": "Fastify's Missing End Anchor in \"subtypeNameReg\" Allows Malformed Content-Types to Pass Validation",
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"summary": "# Description\n\nFastify incorrectly accepts malformed `Content-Type` headers containing trailing characters after the subtype token, in violation of [RFC 9110 \u00a78.3.1](https://httpwg.org/specs/rfc9110.html#field.content-type). For example, a request sent with `Content-Type: application/json garbage` passes validation and is processed normally, rather than being rejected with `415 Unsupported Media Type`.\n\nWhen regex-based content-type parsers are in use (a documented Fastify feature), the malformed value is matched against registered parsers using the full string including the trailing garbage. This means a request with an invalid content-type may be routed to and processed by a parser it should never have reached.\n\n## Impact\n\nAn attacker can send requests with RFC-invalid `Content-Type` headers that bypass validity checks, reach content-type parser matching, and be processed by the server. Requests that should be rejected at the validation stage are instead handled as if the content-type were valid.\n\n## Workarounds\n\nDeploy a WAF rule to protect against this\n\n## Fix\n\nThe fix is available starting with v5.8.1.",
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"published_at": "2026-03-05T21:29:54Z",
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"updated_at": "2026-03-16T03:05:26.332715Z",
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"severity": "low",
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"cvss_score": 3.1,
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"exploit_status": "unknown",
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"source_confidence": "official",
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"official_source_url": "https://github.com/fastify/fastify/security/advisories/GHSA-573f-x89g-hqp9",
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"secondary_source_urls": [
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"https://nvd.nist.gov/vuln/detail/CVE-2026-3419",
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"https://github.com/fastify/fastify/commit/67f6c9b32cb3623d3c9470cc17ed830dd2f083d7",
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"https://cna.openjsf.org/security-advisories.html",
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"https://github.com/advisories/GHSA-573f-x89g-hqp9",
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"https://github.com/fastify/fastify",
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"https://httpwg.org/specs/rfc9110.html#field.content-type",
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"https://www.cve.org/CVERecord?id=CVE-2026-3419"
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],
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"aliases": [
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"CVE-2026-3419",
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"GHSA-573f-x89g-hqp9"
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],
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"cve_ids": [
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"CVE-2026-3419"
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],
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"ghsa_ids": [
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"GHSA-573f-x89g-hqp9"
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],
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"osv_ids": [
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"GHSA-573f-x89g-hqp9"
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],
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"affected_versions": [
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"introduced=5.7.2, fixed<5.8.1"
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],
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"fixed_versions": [
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"5.8.1"
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],
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"package_name": "fastify",
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"render_markdown": true,
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"case_path": "07-framework-security/frameworks/fastify/cases/fastify-cve-2026-3419.md",
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"secure_code_topics": [
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"proxy-trust-boundary",
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"ssrf-url-validation",
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"xss-output-encoding",
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"token-cookie-storage"
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],
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"status": "generated",
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"triage_reasons": [],
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"verification_status": "triage-manual",
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"verification_mode": "synthetic",
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"last_verified_at": null,
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"last_run_id": null,
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"evidence_bundle": null,
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"historical_status": null,
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"latest_status": null,
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"browser_evidence": {
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"required": false,
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"present": false,
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"refs": []
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},
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"repro_profile_id": "xss-generic",
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"artifact_mode": "synthetic",
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"blocked_reason": null,
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"metadata": {
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"source_names": [
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"OSV Fastify"
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],
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"source_kinds": [
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"osv-batch"
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],
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"candidate_count": 1
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}
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}
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