{"cve":"CVE-2026-59990","nvd":{"published":"2026-09-23T19:17:32.637","modified":"2026-09-30T17:32:07.107","status":"Deferred","description":"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.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","score":7.5},"cwes":["CWE-770"],"references":["https://github.com/typelevel/jawn/commit/191cb3a44e77f1afab439ee636bf66bdf3c54a04","https://github.com/typelevel/jawn/commit/6219666641f9408498f85868f835e17bd8a72fed","https://github.com/typelevel/jawn/commit/93ac93e9c992c11b4c03d5455d8551f9fb24da1b","https://github.com/typelevel/jawn/commit/f6ace7e0db715de1a8c4618bed9378333a5c2214","https://github.com/typelevel/jawn/releases/tag/v1.7.0"],"products":[],"source":"nvd","synced_at":"2026-10-19T22:56:02.509636177+00:00"},"epss":{"cve":"CVE-2026-59990","score":0.00615,"percentile":0.49154,"date":"2026-10-25"},"kev":null,"osv":[{"id":"GHSA-cc4v-rvgp-2pf3","url":"https://osv.dev/vulnerability/GHSA-cc4v-rvgp-2pf3","summary":"Jawn: Uncontrolled nesting depth in JSON parser","modified":"2026-09-23T21:30:04.437683237Z","packages":[{"ecosystem":"Maven","name":"org.typelevel:jawn-parser_2.12","purl":"pkg:maven/org.typelevel/jawn-parser_2.12","ranges":["<1.7.0"],"fixed":["1.7.0"]},{"ecosystem":"Maven","name":"org.typelevel:jawn-parser_2.13","purl":"pkg:maven/org.typelevel/jawn-parser_2.13","ranges":["<1.7.0"],"fixed":["1.7.0"]},{"ecosystem":"Maven","name":"org.typelevel:jawn-parser_3","purl":"pkg:maven/org.typelevel/jawn-parser_3","ranges":["<1.7.0"],"fixed":["1.7.0"]}]}],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}