CVE-2026-59990
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.
Not on KEV
Not in CISA's Known Exploited Vulnerabilities catalogue as of the last daily pull. Absence is not proof of safety.
1%
Chance of exploitation in the next 30 days, 48th percentile of all CVEs. A forecast; KEV outranks it.
7.5
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
—
No exposure census on this CVE's dispatches.
- nvd.nist.gov ↗
- first.org · EPSS ↗
- github.com/typelevel/jawn/commit/191cb3a44e77f1afab439ee636bf66bdf3c54a04 ↗
- github.com/typelevel/jawn/commit/6219666641f9408498f85868f835e17bd8a72fed ↗
- github.com/typelevel/jawn/commit/93ac93e9c992c11b4c03d5455d8551f9fb24da1b ↗
- github.com/typelevel/jawn/commit/f6ace7e0db715de1a8c4618bed9378333a5c2214 ↗
- github.com/typelevel/jawn/releases/tag/v1.7.0 ↗
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