Security advisory

{
  "id": "8d2f7f1c2c4b786f22fea88cc968f7e74f7eafa297bda086146961e858dfde74",
  "url": "https://osv.dev/vulnerability/CVE-2021-38384",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "CVE-2021-38384",
    "summary": "Serverless Offline 8.0.0 returns a 403 HTTP status code for a route that has a trailing / character, which might cause a developer to implement incorrect access control, because the actual behavior within the Amazon AWS environment is a 200 HTTP status code (i.e., possibly greater than expected permissions).",
    "evidence": "osv:CVE-2021-38384",
    "products": [],
    "severity": "critical",
    "structured": {
      "id": "CVE-2021-38384",
      "aliases": [
        "CVE-2021-38384",
        "GHSA-h97f-5258-5593"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/dherault/serverless-offline",
              "type": "GIT",
              "events": [
                {
                  "introduced": "6eb15d78379b37ce1793c1a53c12fa31e435a042"
                },
                {
                  "last_affected": "6eb15d78379b37ce1793c1a53c12fa31e435a042"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "cpe": "cpe:2.3:a:serverless_offline_project:serverless_offline:8.0.0:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "8.0.0"
                      },
                      {
                        "last_affected": "8.0.0"
                      }
                    ],
                    "source": "CPE_STRING"
                  }
                ]
              }
            }
          ],
          "versions": [
            "8.0.0",
            "v8.0.0"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2021-38384.json"
          }
        }
      ],
      "modified": "2026-10-20T10:54:53.964053370Z",
      "provider": "osv",
      "references": [
        "https://github.com/dherault/serverless-offline/issues/1259"
      ],
      "provider_metadata": {}
    },
    "related_cves": [
      {
        "value": "CVE-2021-38384",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 386417,
  "published_at": "2021-08-10T18:15:07.513+00:00"
}