Security advisory

{
  "id": "03f6658c456b20703f085ea2cfb574c265661eb4247db1ee90a659089a14dfe2",
  "url": "https://osv.dev/vulnerability/CVE-2021-32838",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "CVE-2021-32838",
    "summary": "Flask-RESTX (pypi package flask-restx) is a community driven fork of Flask-RESTPlus. Flask-RESTX before version 0.5.1 is vulnerable to ReDoS (Regular Expression Denial of Service) in email_regex. This is fixed in version 0.5.1.",
    "evidence": "osv:CVE-2021-32838",
    "products": [],
    "severity": "high",
    "structured": {
      "id": "CVE-2021-32838",
      "aliases": [
        "CVE-2021-32838",
        "GHSA-3q6g-vf58-7m4g",
        "PYSEC-2021-325"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/python-restx/flask-restx",
              "type": "GIT",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "c574c7934c96a4ce96acfab14edaa941e4674e08"
                },
                {
                  "fixed": "bab31e085f355dd73858fd3715f7ed71849656da"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "cpe": "cpe:2.3:a:flask-restx_project:flask-restx:*:*:*:*:*:python:*:*",
                    "range": [
                      {
                        "introduced": "0"
                      },
                      {
                        "fixed": "0.5.1"
                      }
                    ],
                    "source": "CPE_RANGE"
                  },
                  {
                    "range": [
                      {
                        "fixed": "bab31e085f355dd73858fd3715f7ed71849656da"
                      }
                    ],
                    "source": "REFERENCES_COMMIT"
                  }
                ]
              }
            }
          ],
          "versions": [
            "0.5.0",
            "0.4.0",
            "0.3.0",
            "0.2.0",
            "0.1.1"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2021-32838.json"
          }
        }
      ],
      "modified": "2026-10-20T10:53:46.682086090Z",
      "provider": "osv",
      "references": [
        "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/5UCTFVDU3677B5OBGK4EF5NMUPJLL6SQ/",
        "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/QUD6SWZLX52AAZUHDETJ2CDMQGEPGFL3/",
        "https://github.com/advisories/GHSA-3q6g-vf58-7m4g",
        "https://github.com/python-restx/flask-restx/blob/fd99fe11a88531f5f3441a278f7020589f9d2cc0/flask_restx/inputs.py#L51",
        "https://github.com/python-restx/flask-restx/commit/bab31e085f355dd73858fd3715f7ed71849656da",
        "https://github.com/python-restx/flask-restx/issues/372",
        "https://pypi.org/project/flask-restx/"
      ],
      "provider_metadata": {
        "unresolved_ranges": [
          {
            "cpes": [
              "cpe:2.3:o:fedoraproject:fedora:33:*:*:*:*:*:*:*",
              "cpe:2.3:o:fedoraproject:fedora:34:*:*:*:*:*:*:*"
            ],
            "vendor_product": "fedoraproject:fedora",
            "extracted_events": [
              {
                "range": [
                  {
                    "introduced": "33"
                  },
                  {
                    "last_affected": "33"
                  },
                  {
                    "introduced": "34"
                  },
                  {
                    "last_affected": "34"
                  }
                ],
                "source": "CPE_STRING"
              }
            ]
          }
        ]
      }
    },
    "related_cves": [
      {
        "value": "CVE-2021-32838",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 384609,
  "published_at": "2021-09-20T18:15:11.01+00:00"
}