{
  "canonical_id": "nextjs--CVE-2022-21721",
  "system_id": "nextjs",
  "display_name": "Next.js",
  "category": "frameworks",
  "advisory_mode": "core",
  "title": "Denial of Service Vulnerability in next.js",
  "summary": "### Impact\n\nVulnerable code could allow a bad actor to trigger a denial of service attack for anyone running a Next.js app at version >= 12.0.0, and using i18n functionality.\n\n- **Affected:** All of the following must be true to be affected by this CVE\n  - Next.js versions above v12.0.0\n  - Using next start or a custom server\n  - Using the built-in i18n support\n- **Not affected:**\n  - Deployments on Vercel (vercel.com) are not affected along with similar environments where invalid requests are filtered before reaching Next.js.\n\n### Patches\n\nA patch has been released, `next@12.0.9`, that mitigates this issue. We recommend all affected users upgrade as soon as possible.\n\n### Workarounds\n\nWe recommend upgrading whether you can reproduce or not although you can ensure `/${locale}/_next/` is blocked from reaching the Next.js instance until you upgrade.\n\n### For more information\n\nIf you have any questions or comments about this advisory:\n* Open an issue in [next](https://github.com/vercel/next.js)\n* Email us at [security@vercel.com](mailto:security@vercel.com)\n",
  "published_at": "2022-01-28T23:09:22Z",
  "updated_at": "2023-11-08T04:08:09.355091Z",
  "severity": "low",
  "cvss_score": 3.1,
  "exploit_status": "unknown",
  "source_confidence": "official",
  "official_source_url": "https://github.com/vercel/next.js/security/advisories/GHSA-wr66-vrwm-5g5x",
  "secondary_source_urls": [
    "https://nvd.nist.gov/vuln/detail/CVE-2022-21721",
    "https://github.com/vercel/next.js/pull/33503",
    "https://github.com/vercel/next.js",
    "https://github.com/vercel/next.js/releases/tag/v12.0.9"
  ],
  "aliases": [
    "CVE-2022-21721",
    "GHSA-wr66-vrwm-5g5x"
  ],
  "cve_ids": [
    "CVE-2022-21721"
  ],
  "ghsa_ids": [
    "GHSA-wr66-vrwm-5g5x"
  ],
  "osv_ids": [
    "GHSA-wr66-vrwm-5g5x"
  ],
  "affected_versions": [
    "introduced=12.0.0, fixed<12.0.9"
  ],
  "fixed_versions": [
    "12.0.9"
  ],
  "package_name": "next",
  "render_markdown": true,
  "case_path": "07-framework-security/frameworks/nextjs/cases/nextjs-cve-2022-21721.md",
  "secure_code_topics": [
    "authz-server-side-recheck",
    "proxy-trust-boundary",
    "token-cookie-storage",
    "dependency-upgrade-policy"
  ],
  "status": "generated",
  "triage_reasons": [],
  "verification_status": "triage-manual",
  "verification_mode": "synthetic",
  "last_verified_at": null,
  "last_run_id": null,
  "evidence_bundle": null,
  "historical_status": null,
  "latest_status": null,
  "browser_evidence": {
    "required": false,
    "present": false,
    "refs": []
  },
  "repro_profile_id": "nextjs-proxy-boundary",
  "artifact_mode": "official-source",
  "blocked_reason": null,
  "metadata": {
    "source_names": [
      "OSV Next.js"
    ],
    "source_kinds": [
      "osv-batch"
    ],
    "candidate_count": 1
  }
}