{"api_version":"1","generated_at":"2026-07-23T11:56:32+00:00","cve":"CVE-2022-21653","urls":{"html":"https://cve.report/CVE-2022-21653","api":"https://cve.report/api/cve/CVE-2022-21653.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2022-21653","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2022-21653"},"summary":{"title":"CVE-2022-21653","description":"Jawn is an open source JSON parser. Extenders of the `org.typelevel.jawn.SimpleFacade` and `org.typelevel.jawn.MutableFacade` who don't override `objectContext()` are vulnerable to a hash collision attack which may result in a denial of service. Most applications do not implement these traits directly, but inherit from a library. `jawn-parser-1.3.1` fixes this issue and users are advised to upgrade. For users unable to upgrade override `objectContext()` to use a collision-safe collection.","state":"PUBLIC","assigner":"security-advisories@github.com","published_at":"2022-01-05 21:15:00","updated_at":"2022-01-12 18:54:00"},"problem_types":["CWE-326"],"metrics":[],"references":[{"url":"https://github.com/typelevel/jawn/security/advisories/GHSA-vc89-hccf-rq55","name":"https://github.com/typelevel/jawn/security/advisories/GHSA-vc89-hccf-rq55","refsource":"CONFIRM","tags":[],"title":"Hash collision in MutableFacade and SimpleFacade · Advisory · typelevel/jawn · GitHub","mime":"text/html","httpstatus":"200","archivestatus":"404"},{"url":"https://github.com/typelevel/jawn/pull/390","name":"https://github.com/typelevel/jawn/pull/390","refsource":"MISC","tags":[],"title":"Use TreeMap in SimpleFacade to solve DoS vuln by kag0 · Pull Request #390 · typelevel/jawn · GitHub","mime":"text/html","httpstatus":"200","archivestatus":"404"},{"url":"https://www.cve.org/CVERecord?id=CVE-2022-21653","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2022-21653","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[],"timeline":[],"solutions":[],"workarounds":[],"exploits":[],"credits":[],"nvd_cpes":[{"cve_year":"2022","cve_id":"21653","vulnerable":"1","versionEndIncluding":"","cpe1":"cpe","cpe2":"2.3","cpe3":"a","cpe4":"typelevel","cpe5":"jawn","cpe6":"*","cpe7":"*","cpe8":"*","cpe9":"*","cpe10":"*","cpe11":"*","cpe12":"*","cpe13":"*"}],"vendor_comments":[],"enrichments":{"kev":null,"epss":null,"legacy_qids":[{"cve":"CVE-2022-21653","qid":"751617","title":"OpenSUSE Security Update for jawn (openSUSE-SU-2022:0106-1)"}]},"source_records":{"cve_program":{"CVE_data_meta":{"ASSIGNER":"security-advisories@github.com","ID":"CVE-2022-21653","STATE":"PUBLIC","TITLE":"Hash collision in typelevel jawn"},"affects":{"vendor":{"vendor_data":[{"product":{"product_data":[{"product_name":"jawn","version":{"version_data":[{"version_value":"< 1.3.2"}]}}]},"vendor_name":"typelevel"}]}},"data_format":"MITRE","data_type":"CVE","data_version":"4.0","description":{"description_data":[{"lang":"eng","value":"Jawn is an open source JSON parser. Extenders of the `org.typelevel.jawn.SimpleFacade` and `org.typelevel.jawn.MutableFacade` who don't override `objectContext()` are vulnerable to a hash collision attack which may result in a denial of service. Most applications do not implement these traits directly, but inherit from a library. `jawn-parser-1.3.1` fixes this issue and users are advised to upgrade. For users unable to upgrade override `objectContext()` to use a collision-safe collection."}]},"impact":{"cvss":{"attackComplexity":"HIGH","attackVector":"NETWORK","availabilityImpact":"HIGH","baseScore":5.9,"baseSeverity":"MEDIUM","confidentialityImpact":"NONE","integrityImpact":"NONE","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:H/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/typelevel/jawn/security/advisories/GHSA-vc89-hccf-rq55","refsource":"CONFIRM","url":"https://github.com/typelevel/jawn/security/advisories/GHSA-vc89-hccf-rq55"},{"name":"https://github.com/typelevel/jawn/pull/390","refsource":"MISC","url":"https://github.com/typelevel/jawn/pull/390"}]},"source":{"advisory":"GHSA-vc89-hccf-rq55","discovery":"UNKNOWN"}},"nvd":{"publishedDate":"2022-01-05 21:15:00","lastModifiedDate":"2022-01-12 18:54:00","problem_types":["CWE-326"],"metrics":{"baseMetricV3":{"cvssV3":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","attackVector":"NETWORK","attackComplexity":"LOW","privilegesRequired":"NONE","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"NONE","integrityImpact":"NONE","availabilityImpact":"HIGH","baseScore":7.5,"baseSeverity":"HIGH"},"exploitabilityScore":3.9,"impactScore":3.6},"baseMetricV2":{"cvssV2":{"version":"2.0","vectorString":"AV:N/AC:L/Au:N/C:N/I:N/A:P","accessVector":"NETWORK","accessComplexity":"LOW","authentication":"NONE","confidentialityImpact":"NONE","integrityImpact":"NONE","availabilityImpact":"PARTIAL","baseScore":5},"severity":"MEDIUM","exploitabilityScore":10,"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:typelevel:jawn:*:*:*:*:*:*:*:*","versionEndExcluding":"1.3.2","cpe_name":[]}]}]}},"legacy_mitre":{"record":{"CveYear":"2022","CveId":"21653","Ordinal":"221394","Title":"CVE-2022-21653","CVE":"CVE-2022-21653","Year":"2022"},"notes":[{"CveYear":"2022","CveId":"21653","Ordinal":"1","NoteData":"Jawn is an open source JSON parser. Extenders of the `org.typelevel.jawn.SimpleFacade` and `org.typelevel.jawn.MutableFacade` who don't override `objectContext()` are vulnerable to a hash collision attack which may result in a denial of service. Most applications do not implement these traits directly, but inherit from a library. `jawn-parser-1.3.1` fixes this issue and users are advised to upgrade. For users unable to upgrade override `objectContext()` to use a collision-safe collection.","Type":"Description","Title":null},{"CveYear":"2022","CveId":"21653","Ordinal":"2","NoteData":"2022-01-05","Type":"Other","Title":"Published"},{"CveYear":"2022","CveId":"21653","Ordinal":"3","NoteData":"2022-01-05","Type":"Other","Title":"Modified"}]}}}