VULNERABILITY INTELLIGENCE

CVE-2022-21653

CVSS score5.9 MEDIUM

EPSS probability0.82%

CISA KEVNot currently listed

Published2022-01-05

Last modified2026-06-17

CVSS vectorCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H

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.

Weakness classification

security-advisories@github.com: CWE-400
nvd@nist.gov: CWE-326

Primary references

security-advisories@github.com — Exploit, Issue Tracking, Patch, Third Party Advisory
security-advisories@github.com — Patch, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108 — Exploit, Issue Tracking, Patch, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108 — Patch, Third Party Advisory