{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-59990", "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "state": "PUBLISHED", "assignerShortName": "GitHub_M", "dateReserved": "2026-07-07T19:41:00.005Z", "datePublished": "2026-09-23T18:41:12.073Z", "dateUpdated": "2026-09-23T19:27:58.498Z"}, "containers": {"cna": {"title": "Jawn: Uncontrolled nesting depth in JSON parser", "problemTypes": [{"descriptions": [{"cweId": "CWE-770", "lang": "en", "description": "CWE-770: Allocation of Resources Without Limits or Throttling", "type": "CWE"}]}], "metrics": [{"cvssV3_1": {"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"}}], "references": [{"name": "https://github.com/typelevel/jawn/security/advisories/GHSA-cc4v-rvgp-2pf3", "tags": ["x_refsource_CONFIRM"], "url": "https://github.com/typelevel/jawn/security/advisories/GHSA-cc4v-rvgp-2pf3"}, {"name": "https://github.com/typelevel/jawn/commit/191cb3a44e77f1afab439ee636bf66bdf3c54a04", "tags": ["x_refsource_MISC"], "url": "https://github.com/typelevel/jawn/commit/191cb3a44e77f1afab439ee636bf66bdf3c54a04"}, {"name": "https://github.com/typelevel/jawn/commit/6219666641f9408498f85868f835e17bd8a72fed", "tags": ["x_refsource_MISC"], "url": "https://github.com/typelevel/jawn/commit/6219666641f9408498f85868f835e17bd8a72fed"}, {"name": "https://github.com/typelevel/jawn/commit/93ac93e9c992c11b4c03d5455d8551f9fb24da1b", "tags": ["x_refsource_MISC"], "url": "https://github.com/typelevel/jawn/commit/93ac93e9c992c11b4c03d5455d8551f9fb24da1b"}, {"name": "https://github.com/typelevel/jawn/commit/f6ace7e0db715de1a8c4618bed9378333a5c2214", "tags": ["x_refsource_MISC"], "url": "https://github.com/typelevel/jawn/commit/f6ace7e0db715de1a8c4618bed9378333a5c2214"}, {"name": "https://github.com/typelevel/jawn/releases/tag/v1.7.0", "tags": ["x_refsource_MISC"], "url": "https://github.com/typelevel/jawn/releases/tag/v1.7.0"}], "affected": [{"vendor": "typelevel", "product": "jawn", "versions": [{"version": "< 1.7.0", "status": "affected"}]}], "providerMetadata": {"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "shortName": "GitHub_M", "dateUpdated": "2026-09-23T18:41:12.073Z"}, "descriptions": [{"lang": "en", "value": "Jawn is an open source JSON parser. Prior to 1.7.0, Jawn parse methods accept arbitrarily deep JSON array and object nesting without a depth limit, allowing a remote attacker who can submit untrusted JSON to grow parser contexts until the JVM heap is exhausted. The resulting java.lang.OutOfMemoryError is a fatal Scala error that is not ordinarily handled by scala.util.Try or cats.effect.IO, causing denial of service. This issue is fixed in version 1.7.0."}], "source": {"advisory": "GHSA-cc4v-rvgp-2pf3", "discovery": "UNKNOWN"}}, "adp": [{"metrics": [{"other": {"type": "ssvc", "content": {"timestamp": "2026-09-23T19:27:50.740766Z", "id": "CVE-2026-59990", "options": [{"Exploitation": "none"}, {"Automatable": "yes"}, {"Technical Impact": "partial"}], "role": "CISA Coordinator", "version": "2.0.3"}}}], "title": "CISA ADP Vulnrichment", "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-09-23T19:27:58.498Z"}}]}}

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{"affected": [{"affectedData": [{"product": "jawn", "vendor": "typelevel", "versions": [{"status": "affected", "version": "< 1.7.0"}]}], "source": "security-advisories@github.com"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "Jawn is an open source JSON parser. Prior to 1.7.0, Jawn parse methods accept arbitrarily deep JSON array and object nesting without a depth limit, allowing a remote attacker who can submit untrusted JSON to grow parser contexts until the JVM heap is exhausted. The resulting java.lang.OutOfMemoryError is a fatal Scala error that is not ordinarily handled by scala.util.Try or cats.effect.IO, causing denial of service. This issue is fixed in version 1.7.0."}], "id": "CVE-2026-59990", "lastModified": "2026-09-23T19:17:32.637", "metrics": {"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": "2026-09-23T19:17:32.637", "references": [{"source": "security-advisories@github.com", "url": "https://github.com/typelevel/jawn/commit/191cb3a44e77f1afab439ee636bf66bdf3c54a04"}, {"source": "security-advisories@github.com", "url": "https://github.com/typelevel/jawn/commit/6219666641f9408498f85868f835e17bd8a72fed"}, {"source": "security-advisories@github.com", "url": "https://github.com/typelevel/jawn/commit/93ac93e9c992c11b4c03d5455d8551f9fb24da1b"}, {"source": "security-advisories@github.com", "url": "https://github.com/typelevel/jawn/commit/f6ace7e0db715de1a8c4618bed9378333a5c2214"}, {"source": "security-advisories@github.com", "url": "https://github.com/typelevel/jawn/releases/tag/v1.7.0"}, {"source": "security-advisories@github.com", "url": "https://github.com/typelevel/jawn/security/advisories/GHSA-cc4v-rvgp-2pf3"}], "sourceIdentifier": "security-advisories@github.com", "vulnStatus": "Received", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-770"}], "source": "security-advisories@github.com", "type": "Primary"}]}

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