{"api_version":"1","generated_at":"2026-07-24T02:24:57+00:00","cve":"CVE-2021-20326","urls":{"html":"https://cve.report/CVE-2021-20326","api":"https://cve.report/api/cve/CVE-2021-20326.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2021-20326","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2021-20326"},"summary":{"title":"CVE-2021-20326","description":"A user authorized to performing a specific type of find query may trigger a denial of service. This issue affects: MongoDB Inc. MongoDB Server v4.4 versions prior to 4.4.4.","state":"PUBLIC","assigner":"cna@mongodb.com","published_at":"2021-04-30 09:15:00","updated_at":"2024-01-23 16:15:00"},"problem_types":["CWE-732"],"metrics":[],"references":[{"url":"https://jira.mongodb.org/browse/SERVER-53929","name":"N/A","refsource":"CONFIRM","tags":[],"title":"[SERVER-53929] Server crash after invariant failure - MongoDB Jira","mime":"text/html","httpstatus":"200","archivestatus":"404"},{"url":"https://www.cve.org/CVERecord?id=CVE-2021-20326","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2021-20326","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[],"timeline":[],"solutions":[],"workarounds":[],"exploits":[],"credits":[{"source":"LEGACY","value":"Adrien Petel","lang":""}],"nvd_cpes":[{"cve_year":"2021","cve_id":"20326","vulnerable":"1","versionEndIncluding":"","cpe1":"cpe","cpe2":"2.3","cpe3":"a","cpe4":"mongodb","cpe5":"mongodb","cpe6":"*","cpe7":"*","cpe8":"*","cpe9":"*","cpe10":"*","cpe11":"*","cpe12":"*","cpe13":"*"}],"vendor_comments":[],"enrichments":{"kev":null,"epss":null,"legacy_qids":[{"cve":"CVE-2021-20326","qid":"376401","title":"MongoDB Multiple Security Vulnerabilities (SERVER-53929)"}]},"source_records":{"cve_program":{"CVE_data_meta":{"ASSIGNER":"cna@mongodb.com","DATE_PUBLIC":"2021-04-30T16:00:00.000Z","ID":"CVE-2021-20326","STATE":"PUBLIC","TITLE":"Specially crafted query may result in a denial of service of mongod"},"affects":{"vendor":{"vendor_data":[{"product":{"product_data":[{"product_name":"MongoDB Server","version":{"version_data":[{"version_affected":"<","version_name":"4.4","version_value":"4.4.4"}]}}]},"vendor_name":"MongoDB Inc."}]}},"credit":[{"lang":"eng","value":"Adrien Petel"}],"data_format":"MITRE","data_type":"CVE","data_version":"4.0","description":{"description_data":[{"lang":"eng","value":"A user authorized to performing a specific type of find query may trigger a denial of service. This issue affects: MongoDB Inc. MongoDB Server v4.4 versions prior to 4.4.4."}]},"generator":{"engine":"Vulnogram 0.0.9"},"impact":{"cvss":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"HIGH","baseScore":6.5,"baseSeverity":"MEDIUM","confidentialityImpact":"NONE","integrityImpact":"NONE","privilegesRequired":"LOW","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","version":"3.1"}},"problemtype":{"problemtype_data":[{"description":[{"lang":"eng","value":"CWE-20 Improper Input Validation"}]}]},"references":{"reference_data":[{"refsource":"MISC","url":"https://jira.mongodb.org/browse/SERVER-53929","name":"https://jira.mongodb.org/browse/SERVER-53929"}]},"source":{"discovery":"EXTERNAL"}},"nvd":{"publishedDate":"2021-04-30 09:15:00","lastModifiedDate":"2024-01-23 16:15:00","problem_types":["CWE-732"],"metrics":{"baseMetricV3":{"cvssV3":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","attackVector":"NETWORK","attackComplexity":"LOW","privilegesRequired":"LOW","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"NONE","integrityImpact":"NONE","availabilityImpact":"HIGH","baseScore":6.5,"baseSeverity":"MEDIUM"},"exploitabilityScore":2.8,"impactScore":3.6},"baseMetricV2":{"cvssV2":{"version":"2.0","vectorString":"AV:N/AC:L/Au:S/C:N/I:N/A:P","accessVector":"NETWORK","accessComplexity":"LOW","authentication":"SINGLE","confidentialityImpact":"NONE","integrityImpact":"NONE","availabilityImpact":"PARTIAL","baseScore":4},"severity":"MEDIUM","exploitabilityScore":8,"impactScore":2.9,"acInsufInfo":false,"obtainAllPrivilege":false,"obtainUserPrivilege":false,"obtainOtherPrivilege":false,"userInteractionRequired":false}},"configurations":{"CVE_data_version":"4.0","nodes":[{"operator":"OR","children":[],"cpe_match":[{"vulnerable":true,"cpe23Uri":"cpe:2.3:a:mongodb:mongodb:*:*:*:*:*:*:*:*","versionStartIncluding":"4.4.0","versionEndExcluding":"4.4.4","cpe_name":[]}]}]}},"legacy_mitre":{"record":{"CveYear":"2021","CveId":"20326","Ordinal":"194370","Title":"CVE-2021-20326","CVE":"CVE-2021-20326","Year":"2021"},"notes":[{"CveYear":"2021","CveId":"20326","Ordinal":"1","NoteData":"A user authorized to performing a specific type of find query may trigger a denial of service. This issue affects: MongoDB Inc. MongoDB Server v4.4 versions prior to 4.4.4.","Type":"Description","Title":null},{"CveYear":"2021","CveId":"20326","Ordinal":"2","NoteData":"2021-04-30","Type":"Other","Title":"Published"},{"CveYear":"2021","CveId":"20326","Ordinal":"3","NoteData":"2021-04-30","Type":"Other","Title":"Modified"}]}}}