Vulnerability-Lookup

CVE-2021-32838 (GCVE-0-2021-32838)

Vulnerability from cvelistv5 – Published: 2021-09-20 17:30 – Updated: 2024-08-03 23:33

Title

Regular Expression Denial of Service in flask-restx

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.

Severity

7.5 (High)


                        
                          CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

CWE

CWE-400 - Uncontrolled Resource Consumption

Assigner

GitHub_M mitre root

References

7 references

URL	Tags
https://github.com/advisories/GHSA-3q6g-vf58-7m4g	x_refsource_CONFIRM
https://github.com/python-restx/flask-restx/issues/372	x_refsource_MISC
https://github.com/python-restx/flask-restx/commi…	x_refsource_MISC
https://github.com/python-restx/flask-restx/blob/…	x_refsource_MISC
https://pypi.org/project/flask-restx/	x_refsource_MISC
https://lists.fedoraproject.org/archives/list/pac…	vendor-advisoryx_refsource_FEDORA
https://lists.fedoraproject.org/archives/list/pac…	vendor-advisoryx_refsource_FEDORA

Impacted products

1 product

Vendor	Product	Version	CPE status
python-restx	flask-restx	Affected: < 0.5.1	guessed

Show details on NVD website

JSON

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                "attackVector": "NETWORK",
                "availabilityImpact": "HIGH",
                "baseScore": 7.5,
                "baseSeverity": "HIGH",
                "confidentialityImpact": "NONE",
                "integrityImpact": "NONE",
                "privilegesRequired": "NONE",
                "scope": "UNCHANGED",
                "userInteraction": "NONE",
                "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
                "version": "3.1"
              },
              "exploitabilityScore": 3.9,
              "impactScore": 3.6,
              "source": "security-advisories@github.com",
              "type": "Secondary"
            }
          ]
        },
        "published": "2021-09-20T18:15:11.010",
        "references": [
          {
            "source": "security-advisories@github.com",
            "tags": [
              "Third Party Advisory"
            ],
            "url": "https://github.com/advisories/GHSA-3q6g-vf58-7m4g"
          },
          {
            "source": "security-advisories@github.com",
            "tags": [
              "Patch",
              "Third Party Advisory"
            ],
            "url": "https://github.com/python-restx/flask-restx/blob/fd99fe11a88531f5f3441a278f7020589f9d2cc0/flask_restx/inputs.py#L51"
          },
          {
            "source": "security-advisories@github.com",
            "tags": [
              "Patch",
              "Third Party Advisory"
            ],
            "url": "https://github.com/python-restx/flask-restx/commit/bab31e085f355dd73858fd3715f7ed71849656da"
          },
          {
            "source": "security-advisories@github.com",
            "tags": [
              "Issue Tracking",
              "Patch",
              "Third Party Advisory"
            ],
            "url": "https://github.com/python-restx/flask-restx/issues/372"
          },
          {
            "source": "security-advisories@github.com",
            "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/5UCTFVDU3677B5OBGK4EF5NMUPJLL6SQ/"
          },
          {
            "source": "security-advisories@github.com",
            "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/QUD6SWZLX52AAZUHDETJ2CDMQGEPGFL3/"
          },
          {
            "source": "security-advisories@github.com",
            "tags": [
              "Product",
              "Third Party Advisory"
            ],
            "url": "https://pypi.org/project/flask-restx/"
          },
          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
            "tags": [
              "Third Party Advisory"
            ],
            "url": "https://github.com/advisories/GHSA-3q6g-vf58-7m4g"
          },
          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
            "tags": [
              "Patch",
              "Third Party Advisory"
            ],
            "url": "https://github.com/python-restx/flask-restx/blob/fd99fe11a88531f5f3441a278f7020589f9d2cc0/flask_restx/inputs.py#L51"
          },
          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
            "tags": [
              "Patch",
              "Third Party Advisory"
            ],
            "url": "https://github.com/python-restx/flask-restx/commit/bab31e085f355dd73858fd3715f7ed71849656da"
          },
          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
            "tags": [
              "Issue Tracking",
              "Patch",
              "Third Party Advisory"
            ],
            "url": "https://github.com/python-restx/flask-restx/issues/372"
          },
          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
            "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/5UCTFVDU3677B5OBGK4EF5NMUPJLL6SQ/"
          },
          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
            "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/QUD6SWZLX52AAZUHDETJ2CDMQGEPGFL3/"
          },
          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
            "tags": [
              "Product",
              "Third Party Advisory"
            ],
            "url": "https://pypi.org/project/flask-restx/"
          }
        ],
        "sourceIdentifier": "security-advisories@github.com",
        "vulnStatus": "Modified",
        "weaknesses": [
          {
            "description": [
              {
                "lang": "en",
                "value": "CWE-400"
              }
            ],
            "source": "security-advisories@github.com",
            "type": "Primary"
          }
        ]
      }
    },
    "redhat_vex": {
      "current_release_date": "2025-11-21T16:13:12+00:00",
      "cve": "CVE-2021-32838",
      "id": "CVE-2021-32838",
      "initial_release_date": "2021-09-20T00:00:00+00:00",
      "product_status:known_not_affected": "1",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "python-flask-restx: Regular expression denial of service in email_regex",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2021/cve-2021-32838.json",
      "version": "3"
    },
    "suse_vex": {
      "aggregate_severity": "important",
      "current_release_date": "2025-02-17T05:22:39Z",
      "cve": "CVE-2021-32838",
      "id": "CVE-2021-32838",
      "initial_release_date": "2023-02-15T03:40:43Z",
      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2021-32838",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2021-32838.json",
      "version": "5"
    }
  }
}

BREW-FLEXGET-CVE-2021-32838 (GHSA-3Q6G-VF58-7M4G)

Vulnerability from osv_homebrew – Published: 2026-08-13 16:47 – Updated: 2026-09-09 23:58 – Source website

Summary

Regular Expression Denial of Service in flask-restx

Details

Flask RESTX contains a regular expression that is vulnerable to ReDoS (Regular Expression Denial of Service) in email_regex.

Severity

7.5 (High)


                    
                      CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

8.7 (High)


                    
                      CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N

References

URL

Type

	https://github.com/python-restx/flask-restx/secur…	WEB
	https://nvd.nist.gov/vuln/detail/CVE-2021-32838	ADVISORY
	https://github.com/python-restx/flask-restx/issues/372	WEB
	https://github.com/python-restx/flask-restx/commi…	WEB
	https://github.com/advisories/GHSA-3q6g-vf58-7m4g	ADVISORY
	https://github.com/pypa/advisory-database/tree/ma…	WEB
	https://github.com/python-restx/flask-restx	PACKAGE
	https://github.com/python-restx/flask-restx/blob/…	WEB
	https://lists.fedoraproject.org/archives/list/pac…	WEB
	https://lists.fedoraproject.org/archives/list/pac…	WEB
	https://pypi.org/project/flask-restx	WEB

JSON

To clipboard

{
  "affected": [
    {
      "ecosystem_specific": {
        "fix": "bump",
        "range_state": "fixed",
        "resource": "flask-restx",
        "resource_purl": "pkg:pypi/flask-restx@1.3.2",
        "upstream_fixed_in": "0.5.1"
      },
      "package": {
        "ecosystem": "Homebrew",
        "name": "flexget",
        "purl": "pkg:brew/flexget"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "3.20.4"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "database_specific": {
    "confidence": "high",
    "source": "matched",
    "strategy": "registry",
    "upstream_evidence": [
      {
        "ecosystem": "PyPI",
        "key": "pkg:pypi/flask-restx@1.3.2",
        "name": "flask-restx",
        "resource": "flask-restx",
        "strategy": "registry",
        "subject_version": "1.3.2"
      }
    ]
  },
  "details": "Flask RESTX contains a regular expression that is vulnerable to [ReDoS](https://owasp.org/www-community/attacks/Regular_expression_Denial_of_Service_-_ReDoS) (Regular Expression Denial of Service) in `email_regex`.\n",
  "id": "BREW-flexget-CVE-2021-32838",
  "modified": "2026-09-09T23:58:04Z",
  "published": "2026-08-13T16:47:29Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/python-restx/flask-restx/security/advisories/GHSA-3q6g-vf58-7m4g"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2021-32838"
    },
    {
      "type": "WEB",
      "url": "https://github.com/python-restx/flask-restx/issues/372"
    },
    {
      "type": "WEB",
      "url": "https://github.com/python-restx/flask-restx/commit/bab31e085f355dd73858fd3715f7ed71849656da"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/advisories/GHSA-3q6g-vf58-7m4g"
    },
    {
      "type": "WEB",
      "url": "https://github.com/pypa/advisory-database/tree/main/vulns/flask-restx/PYSEC-2021-325.yaml"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/python-restx/flask-restx"
    },
    {
      "type": "WEB",
      "url": "https://github.com/python-restx/flask-restx/blob/fd99fe11a88531f5f3441a278f7020589f9d2cc0/flask_restx/inputs.py#L51"
    },
    {
      "type": "WEB",
      "url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/5UCTFVDU3677B5OBGK4EF5NMUPJLL6SQ"
    },
    {
      "type": "WEB",
      "url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/QUD6SWZLX52AAZUHDETJ2CDMQGEPGFL3"
    },
    {
      "type": "WEB",
      "url": "https://pypi.org/project/flask-restx"
    }
  ],
  "schema_version": "1.7.3",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    },
    {
      "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N",
      "type": "CVSS_V4"
    }
  ],
  "summary": "Regular Expression Denial of Service in flask-restx",
  "upstream": [
    "GHSA-3q6g-vf58-7m4g",
    "CVE-2021-32838",
    "PYSEC-2021-325"
  ]
}

FKIE_CVE-2021-32838

Vulnerability from fkie_nvd - Published: 2021-09-20 18:15 - Updated: 2026-06-17 03:53

Severity

7.5 (High) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Summary

References

URL	Tags
security-advisories@github.com	https://github.com/advisories/GHSA-3q6g-vf58-7m4g	Third Party Advisory
security-advisories@github.com	https://github.com/python-restx/flask-restx/blob/fd99fe11a88531f5f3441a278f7020589f9d2cc0/flask_restx/inputs.py#L51	Patch, Third Party Advisory
security-advisories@github.com	https://github.com/python-restx/flask-restx/commit/bab31e085f355dd73858fd3715f7ed71849656da	Patch, Third Party Advisory
security-advisories@github.com	https://github.com/python-restx/flask-restx/issues/372	Issue Tracking, Patch, Third Party Advisory
security-advisories@github.com	https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/5UCTFVDU3677B5OBGK4EF5NMUPJLL6SQ/
security-advisories@github.com	https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/QUD6SWZLX52AAZUHDETJ2CDMQGEPGFL3/
security-advisories@github.com	https://pypi.org/project/flask-restx/	Product, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108	https://github.com/advisories/GHSA-3q6g-vf58-7m4g	Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108	https://github.com/python-restx/flask-restx/blob/fd99fe11a88531f5f3441a278f7020589f9d2cc0/flask_restx/inputs.py#L51	Patch, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108	https://github.com/python-restx/flask-restx/commit/bab31e085f355dd73858fd3715f7ed71849656da	Patch, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108	https://github.com/python-restx/flask-restx/issues/372	Issue Tracking, Patch, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108	https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/5UCTFVDU3677B5OBGK4EF5NMUPJLL6SQ/
af854a3a-2127-422b-91ae-364da2661108	https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/QUD6SWZLX52AAZUHDETJ2CDMQGEPGFL3/
af854a3a-2127-422b-91ae-364da2661108	https://pypi.org/project/flask-restx/	Product, Third Party Advisory

Impacted products

Vendor	Product	Version
flask-restx_project	flask-restx	*
fedoraproject	fedora	33
fedoraproject	fedora	34

JSON

To clipboard

{
  "affected": [
    {
      "affectedData": [
        {
          "product": "flask-restx",
          "vendor": "python-restx",
          "versions": [
            {
              "status": "affected",
              "version": "\u003c 0.5.1"
            }
          ]
        }
      ],
      "source": "security-advisories@github.com"
    }
  ],
  "configurations": [
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:flask-restx_project:flask-restx:*:*:*:*:*:python:*:*",
              "matchCriteriaId": "BA9C0D28-C95B-41C6-A116-511860EDE383",
              "versionEndExcluding": "0.5.1",
              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
        }
      ]
    },
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:o:fedoraproject:fedora:33:*:*:*:*:*:*:*",
              "matchCriteriaId": "E460AA51-FCDA-46B9-AE97-E6676AA5E194",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:fedoraproject:fedora:34:*:*:*:*:*:*:*",
              "matchCriteriaId": "A930E247-0B43-43CB-98FF-6CE7B8189835",
              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
        }
      ]
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "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."
    },
    {
      "lang": "es",
      "value": "Flask-RESTX (paquete pypi flask-restx) es un fork impulsado por la comunidad de Flask-RESTPlus. Flask-RESTX versiones anteriores a 0.5.1, es vulnerable a ReDoS (Denegaci\u00f3n de Servicio por Expresi\u00f3n Regular) en la funci\u00f3n email_regex. Esto ha sido corregido en la versi\u00f3n 0.5.1"
    }
  ],
  "id": "CVE-2021-32838",
  "lastModified": "2026-06-17T03:53:44.003",
  "metrics": {
    "cvssMetricV2": [
      {
        "acInsufInfo": false,
        "baseSeverity": "MEDIUM",
        "cvssData": {
          "accessComplexity": "LOW",
          "accessVector": "NETWORK",
          "authentication": "NONE",
          "availabilityImpact": "PARTIAL",
          "baseScore": 5.0,
          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
          "vectorString": "AV:N/AC:L/Au:N/C:N/I:N/A:P",
          "version": "2.0"
        },
        "exploitabilityScore": 10.0,
        "impactScore": 2.9,
        "obtainAllPrivilege": false,
        "obtainOtherPrivilege": false,
        "obtainUserPrivilege": false,
        "source": "nvd@nist.gov",
        "type": "Primary",
        "userInteractionRequired": false
      }
    ],
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "HIGH",
          "baseScore": 7.5,
          "baseSeverity": "HIGH",
          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
          "privilegesRequired": "NONE",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
          "version": "3.1"
        },
        "exploitabilityScore": 3.9,
        "impactScore": 3.6,
        "source": "security-advisories@github.com",
        "type": "Secondary"
      }
    ]
  },
  "published": "2021-09-20T18:15:11.010",
  "references": [
    {
      "source": "security-advisories@github.com",
      "tags": [
        "Third Party Advisory"
      ],
      "url": "https://github.com/advisories/GHSA-3q6g-vf58-7m4g"
    },
    {
      "source": "security-advisories@github.com",
      "tags": [
        "Patch",
        "Third Party Advisory"
      ],
      "url": "https://github.com/python-restx/flask-restx/blob/fd99fe11a88531f5f3441a278f7020589f9d2cc0/flask_restx/inputs.py#L51"
    },
    {
      "source": "security-advisories@github.com",
      "tags": [
        "Patch",
        "Third Party Advisory"
      ],
      "url": "https://github.com/python-restx/flask-restx/commit/bab31e085f355dd73858fd3715f7ed71849656da"
    },
    {
      "source": "security-advisories@github.com",
      "tags": [
        "Issue Tracking",
        "Patch",
        "Third Party Advisory"
      ],
      "url": "https://github.com/python-restx/flask-restx/issues/372"
    },
    {
      "source": "security-advisories@github.com",
      "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/5UCTFVDU3677B5OBGK4EF5NMUPJLL6SQ/"
    },
    {
      "source": "security-advisories@github.com",
      "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/QUD6SWZLX52AAZUHDETJ2CDMQGEPGFL3/"
    },
    {
      "source": "security-advisories@github.com",
      "tags": [
        "Product",
        "Third Party Advisory"
      ],
      "url": "https://pypi.org/project/flask-restx/"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Third Party Advisory"
      ],
      "url": "https://github.com/advisories/GHSA-3q6g-vf58-7m4g"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Patch",
        "Third Party Advisory"
      ],
      "url": "https://github.com/python-restx/flask-restx/blob/fd99fe11a88531f5f3441a278f7020589f9d2cc0/flask_restx/inputs.py#L51"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Patch",
        "Third Party Advisory"
      ],
      "url": "https://github.com/python-restx/flask-restx/commit/bab31e085f355dd73858fd3715f7ed71849656da"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Issue Tracking",
        "Patch",
        "Third Party Advisory"
      ],
      "url": "https://github.com/python-restx/flask-restx/issues/372"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/5UCTFVDU3677B5OBGK4EF5NMUPJLL6SQ/"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/QUD6SWZLX52AAZUHDETJ2CDMQGEPGFL3/"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Product",
        "Third Party Advisory"
      ],
      "url": "https://pypi.org/project/flask-restx/"
    }
  ],
  "sourceIdentifier": "security-advisories@github.com",
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-400"
        }
      ],
      "source": "security-advisories@github.com",
      "type": "Secondary"
    }
  ]
}

GHSA-3Q6G-VF58-7M4G

Vulnerability from github – Published: 2021-09-08 15:41 – Updated: 2024-09-20 17:57

Summary

Regular Expression Denial of Service in flask-restx

Details

Flask RESTX contains a regular expression that is vulnerable to ReDoS (Regular Expression Denial of Service) in email_regex.

Severity

7.5 (High)


                  
                    CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

8.7 (High)


                  
                    CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N

Show details on source website

JSON

To clipboard

{
  "affected": [
    {
      "package": {
        "ecosystem": "PyPI",
        "name": "flask-restx"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "0.5.1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2021-32838"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-1333",
      "CWE-400"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2021-09-07T14:24:52Z",
    "nvd_published_at": "2021-09-20T18:15:00Z",
    "severity": "HIGH"
  },
  "details": "Flask RESTX contains a regular expression that is vulnerable to [ReDoS](https://owasp.org/www-community/attacks/Regular_expression_Denial_of_Service_-_ReDoS) (Regular Expression Denial of Service) in `email_regex`.\n",
  "id": "GHSA-3q6g-vf58-7m4g",
  "modified": "2024-09-20T17:57:56Z",
  "published": "2021-09-08T15:41:15Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/python-restx/flask-restx/security/advisories/GHSA-3q6g-vf58-7m4g"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2021-32838"
    },
    {
      "type": "WEB",
      "url": "https://github.com/python-restx/flask-restx/issues/372"
    },
    {
      "type": "WEB",
      "url": "https://github.com/python-restx/flask-restx/commit/bab31e085f355dd73858fd3715f7ed71849656da"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/advisories/GHSA-3q6g-vf58-7m4g"
    },
    {
      "type": "WEB",
      "url": "https://github.com/pypa/advisory-database/tree/main/vulns/flask-restx/PYSEC-2021-325.yaml"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/python-restx/flask-restx"
    },
    {
      "type": "WEB",
      "url": "https://github.com/python-restx/flask-restx/blob/fd99fe11a88531f5f3441a278f7020589f9d2cc0/flask_restx/inputs.py#L51"
    },
    {
      "type": "WEB",
      "url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/5UCTFVDU3677B5OBGK4EF5NMUPJLL6SQ"
    },
    {
      "type": "WEB",
      "url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/QUD6SWZLX52AAZUHDETJ2CDMQGEPGFL3"
    },
    {
      "type": "WEB",
      "url": "https://pypi.org/project/flask-restx"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    },
    {
      "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N",
      "type": "CVSS_V4"
    }
  ],
  "summary": "Regular Expression Denial of Service in flask-restx"
}

GSD-2021-32838

Vulnerability from gsd - Updated: 2023-12-13 01:23

Details

Aliases

CVE-2021-32838

Aliases

CVE-2021-32838

JSON

To clipboard

{
  "GSD": {
    "alias": "CVE-2021-32838",
    "description": "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.",
    "id": "GSD-2021-32838",
    "references": [
      "https://www.suse.com/security/cve/CVE-2021-32838.html",
      "https://advisories.mageia.org/CVE-2021-32838.html"
    ]
  },
  "gsd": {
    "metadata": {
      "exploitCode": "unknown",
      "remediation": "unknown",
      "reportConfidence": "confirmed",
      "type": "vulnerability"
    },
    "osvSchema": {
      "aliases": [
        "CVE-2021-32838"
      ],
      "details": "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.",
      "id": "GSD-2021-32838",
      "modified": "2023-12-13T01:23:09.322101Z",
      "schema_version": "1.4.0"
    }
  },
  "namespaces": {
    "cve.org": {
      "CVE_data_meta": {
        "ASSIGNER": "security-advisories@github.com",
        "ID": "CVE-2021-32838",
        "STATE": "PUBLIC",
        "TITLE": "Regular Expression Denial of Service in flask-restx"
      },
      "affects": {
        "vendor": {
          "vendor_data": [
            {
              "product": {
                "product_data": [
                  {
                    "product_name": "flask-restx",
                    "version": {
                      "version_data": [
                        {
                          "version_value": "\u003c 0.5.1"
                        }
                      ]
                    }
                  }
                ]
              },
              "vendor_name": "python-restx"
            }
          ]
        }
      },
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          }
        ]
      },
      "generator": {
        "engine": "Vulnogram 0.0.9"
      },
      "impact": {
        "cvss": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "HIGH",
          "baseScore": 7.5,
          "baseSeverity": "HIGH",
          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
          "privilegesRequired": "NONE",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
          "version": "3.1"
        }
      },
      "problemtype": {
        "problemtype_data": [
          {
            "description": [
              {
                "lang": "eng",
                "value": "CWE-400 Uncontrolled Resource Consumption"
              }
            ]
          }
        ]
      },
      "references": {
        "reference_data": [
          {
            "name": "https://github.com/advisories/GHSA-3q6g-vf58-7m4g",
            "refsource": "CONFIRM",
            "url": "https://github.com/advisories/GHSA-3q6g-vf58-7m4g"
          },
          {
            "name": "https://github.com/python-restx/flask-restx/issues/372",
            "refsource": "MISC",
            "url": "https://github.com/python-restx/flask-restx/issues/372"
          },
          {
            "name": "https://github.com/python-restx/flask-restx/commit/bab31e085f355dd73858fd3715f7ed71849656da",
            "refsource": "MISC",
            "url": "https://github.com/python-restx/flask-restx/commit/bab31e085f355dd73858fd3715f7ed71849656da"
          },
          {
            "name": "https://github.com/python-restx/flask-restx/blob/fd99fe11a88531f5f3441a278f7020589f9d2cc0/flask_restx/inputs.py#L51",
            "refsource": "MISC",
            "url": "https://github.com/python-restx/flask-restx/blob/fd99fe11a88531f5f3441a278f7020589f9d2cc0/flask_restx/inputs.py#L51"
          },
          {
            "name": "https://pypi.org/project/flask-restx/",
            "refsource": "MISC",
            "url": "https://pypi.org/project/flask-restx/"
          },
          {
            "name": "FEDORA-2021-0739f45529",
            "refsource": "FEDORA",
            "url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/5UCTFVDU3677B5OBGK4EF5NMUPJLL6SQ/"
          },
          {
            "name": "FEDORA-2021-67b7695f95",
            "refsource": "FEDORA",
            "url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/QUD6SWZLX52AAZUHDETJ2CDMQGEPGFL3/"
          }
        ]
      },
      "source": {
        "advisory": "GHSA-3q6g-vf58-7m4g",
        "discovery": "UNKNOWN"
      }
    },
    "gitlab.com": {
      "advisories": [
        {
          "affected_range": "\u003c0.5.1",
          "affected_versions": "All versions before 0.5.1",
          "cvss_v2": "AV:N/AC:L/Au:N/C:N/I:N/A:P",
          "cvss_v3": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
          "cwe_ids": [
            "CWE-1035",
            "CWE-937"
          ],
          "date": "2021-09-30",
          "description": "Flask-RESTX (pypi package flask-restx) is a community driven fork of Flask-RESTPlus. Flask-RESTX is vulnerable to ReDoS (Regular Expression Denial of Service) in email_regex.",
          "fixed_versions": [
            "0.5.1"
          ],
          "identifier": "CVE-2021-32838",
          "identifiers": [
            "CVE-2021-32838",
            "GHSA-3q6g-vf58-7m4g"
          ],
          "not_impacted": "All versions starting from 0.5.1",
          "package_slug": "pypi/flask-restx",
          "pubdate": "2021-09-20",
          "solution": "Upgrade to version 0.5.1 or above.",
          "title": "Uncontrolled Resource Consumption",
          "urls": [
            "https://nvd.nist.gov/vuln/detail/CVE-2021-32838",
            "https://github.com/python-restx/flask-restx/issues/372"
          ],
          "uuid": "ecd543db-933a-458d-9f5e-1b1f6300ac86"
        }
      ]
    },
    "nvd.nist.gov": {
      "configurations": {
        "CVE_data_version": "4.0",
        "nodes": [
          {
            "children": [],
            "cpe_match": [
              {
                "cpe23Uri": "cpe:2.3:a:flask-restx_project:flask-restx:*:*:*:*:*:python:*:*",
                "cpe_name": [],
                "versionEndExcluding": "0.5.1",
                "vulnerable": true
              }
            ],
            "operator": "OR"
          },
          {
            "children": [],
            "cpe_match": [
              {
                "cpe23Uri": "cpe:2.3:o:fedoraproject:fedora:33:*:*:*:*:*:*:*",
                "cpe_name": [],
                "vulnerable": true
              },
              {
                "cpe23Uri": "cpe:2.3:o:fedoraproject:fedora:34:*:*:*:*:*:*:*",
                "cpe_name": [],
                "vulnerable": true
              }
            ],
            "operator": "OR"
          }
        ]
      },
      "cve": {
        "CVE_data_meta": {
          "ASSIGNER": "security-advisories@github.com",
          "ID": "CVE-2021-32838"
        },
        "data_format": "MITRE",
        "data_type": "CVE",
        "data_version": "4.0",
        "description": {
          "description_data": [
            {
              "lang": "en",
              "value": "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."
            }
          ]
        },
        "problemtype": {
          "problemtype_data": [
            {
              "description": [
                {
                  "lang": "en",
                  "value": "CWE-400"
                }
              ]
            }
          ]
        },
        "references": {
          "reference_data": [
            {
              "name": "https://github.com/python-restx/flask-restx/issues/372",
              "refsource": "MISC",
              "tags": [
                "Issue Tracking",
                "Patch",
                "Third Party Advisory"
              ],
              "url": "https://github.com/python-restx/flask-restx/issues/372"
            },
            {
              "name": "https://pypi.org/project/flask-restx/",
              "refsource": "MISC",
              "tags": [
                "Product",
                "Third Party Advisory"
              ],
              "url": "https://pypi.org/project/flask-restx/"
            },
            {
              "name": "https://github.com/python-restx/flask-restx/commit/bab31e085f355dd73858fd3715f7ed71849656da",
              "refsource": "MISC",
              "tags": [
                "Patch",
                "Third Party Advisory"
              ],
              "url": "https://github.com/python-restx/flask-restx/commit/bab31e085f355dd73858fd3715f7ed71849656da"
            },
            {
              "name": "https://github.com/advisories/GHSA-3q6g-vf58-7m4g",
              "refsource": "CONFIRM",
              "tags": [
                "Third Party Advisory"
              ],
              "url": "https://github.com/advisories/GHSA-3q6g-vf58-7m4g"
            },
            {
              "name": "https://github.com/python-restx/flask-restx/blob/fd99fe11a88531f5f3441a278f7020589f9d2cc0/flask_restx/inputs.py#L51",
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              "tags": [
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                "Third Party Advisory"
              ],
              "url": "https://github.com/python-restx/flask-restx/blob/fd99fe11a88531f5f3441a278f7020589f9d2cc0/flask_restx/inputs.py#L51"
            },
            {
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              "refsource": "FEDORA",
              "tags": [
                "Mailing List",
                "Third Party Advisory"
              ],
              "url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/QUD6SWZLX52AAZUHDETJ2CDMQGEPGFL3/"
            },
            {
              "name": "FEDORA-2021-0739f45529",
              "refsource": "FEDORA",
              "tags": [
                "Mailing List",
                "Third Party Advisory"
              ],
              "url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/5UCTFVDU3677B5OBGK4EF5NMUPJLL6SQ/"
            }
          ]
        }
      },
      "impact": {
        "baseMetricV2": {
          "acInsufInfo": false,
          "cvssV2": {
            "accessComplexity": "LOW",
            "accessVector": "NETWORK",
            "authentication": "NONE",
            "availabilityImpact": "PARTIAL",
            "baseScore": 5.0,
            "confidentialityImpact": "NONE",
            "integrityImpact": "NONE",
            "vectorString": "AV:N/AC:L/Au:N/C:N/I:N/A:P",
            "version": "2.0"
          },
          "exploitabilityScore": 10.0,
          "impactScore": 2.9,
          "obtainAllPrivilege": false,
          "obtainOtherPrivilege": false,
          "obtainUserPrivilege": false,
          "severity": "MEDIUM",
          "userInteractionRequired": false
        },
        "baseMetricV3": {
          "cvssV3": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "HIGH",
            "baseScore": 7.5,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "NONE",
            "integrityImpact": "NONE",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
            "version": "3.1"
          },
          "exploitabilityScore": 3.9,
          "impactScore": 3.6
        }
      },
      "lastModifiedDate": "2021-09-30T19:23Z",
      "publishedDate": "2021-09-20T18:15Z"
    }
  }
}

PYSEC-2021-325

Vulnerability from pysec - Published: 2021-09-20 18:15 - Updated: 2021-09-20 20:31

Details

Impacted products

Name	purl
flask-restx	pkg:pypi/flask-restx

Aliases

JSON

To clipboard

{
  "affected": [
    {
      "package": {
        "ecosystem": "PyPI",
        "name": "flask-restx",
        "purl": "pkg:pypi/flask-restx"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "bab31e085f355dd73858fd3715f7ed71849656da"
            }
          ],
          "repo": "https://github.com/python-restx/flask-restx",
          "type": "GIT"
        },
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "0.5.1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "0.0.1.dev0",
        "0.1.0",
        "0.1.1",
        "0.2.0",
        "0.3.0",
        "0.4.0",
        "0.5.0"
      ]
    }
  ],
  "aliases": [
    "CVE-2021-32838",
    "GHSA-3q6g-vf58-7m4g"
  ],
  "details": "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.",
  "id": "PYSEC-2021-325",
  "modified": "2021-09-20T20:31:06.092661Z",
  "published": "2021-09-20T18:15:00Z",
  "references": [
    {
      "type": "REPORT",
      "url": "https://github.com/python-restx/flask-restx/issues/372"
    },
    {
      "type": "PACKAGE",
      "url": "https://pypi.org/project/flask-restx/"
    },
    {
      "type": "FIX",
      "url": "https://github.com/python-restx/flask-restx/commit/bab31e085f355dd73858fd3715f7ed71849656da"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/advisories/GHSA-3q6g-vf58-7m4g"
    },
    {
      "type": "WEB",
      "url": "https://github.com/python-restx/flask-restx/blob/fd99fe11a88531f5f3441a278f7020589f9d2cc0/flask_restx/inputs.py#L51"
    }
  ]
}

Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Detection rules are retrieved from Rulezet.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.

Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.

Action not permitted

CVE-2021-32838 (GCVE-0-2021-32838)

BREW-FLEXGET-CVE-2021-32838 (GHSA-3Q6G-VF58-7M4G)

FKIE_CVE-2021-32838

GHSA-3Q6G-VF58-7M4G

GSD-2021-32838

PYSEC-2021-325

Tags

Sightings

Nomenclature

Related by attack behaviour