{"id":"CVE-2026-59990","published":"2026-09-23T19:17:32.637","lastModified":"2026-09-23T20:17:11.903","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.","cvssScore":7.5,"cvssSeverity":"HIGH","cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","cwes":["CWE-770"],"vendors":[],"products":[],"references":[{"url":"https://github.com/typelevel/jawn/commit/191cb3a44e77f1afab439ee636bf66bdf3c54a04","tags":[]},{"url":"https://github.com/typelevel/jawn/commit/6219666641f9408498f85868f835e17bd8a72fed","tags":[]},{"url":"https://github.com/typelevel/jawn/commit/93ac93e9c992c11b4c03d5455d8551f9fb24da1b","tags":[]},{"url":"https://github.com/typelevel/jawn/commit/f6ace7e0db715de1a8c4618bed9378333a5c2214","tags":[]},{"url":"https://github.com/typelevel/jawn/releases/tag/v1.7.0","tags":[]},{"url":"https://github.com/typelevel/jawn/security/advisories/GHSA-cc4v-rvgp-2pf3","tags":[]}],"exploitRefs":[{"url":"https://github.com/typelevel/jawn/commit/191cb3a44e77f1afab439ee636bf66bdf3c54a04","tags":[]},{"url":"https://github.com/typelevel/jawn/commit/6219666641f9408498f85868f835e17bd8a72fed","tags":[]},{"url":"https://github.com/typelevel/jawn/commit/93ac93e9c992c11b4c03d5455d8551f9fb24da1b","tags":[]},{"url":"https://github.com/typelevel/jawn/commit/f6ace7e0db715de1a8c4618bed9378333a5c2214","tags":[]},{"url":"https://github.com/typelevel/jawn/releases/tag/v1.7.0","tags":[]},{"url":"https://github.com/typelevel/jawn/security/advisories/GHSA-cc4v-rvgp-2pf3","tags":[]}],"hasPoc":true,"ai":null}