CVE-2022-21653
Last modified
CVE-2022-21653 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. 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. EPSS estimates a 0.79% chance of exploitation in the next 30 days.
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.
Metrics
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Typelevel | Jawn | < 1.3.2 |
References
- https://github.com/typelevel/jawn/pull/390Exploit, Issue Tracking, Patch, Third Party Advisory
- https://github.com/typelevel/jawn/security/advisories/GHSA-vc89-hccf-rq55Patch, Third Party Advisory
- https://github.com/typelevel/jawn/pull/390Exploit, Issue Tracking, Patch, Third Party Advisory
- https://github.com/typelevel/jawn/security/advisories/GHSA-vc89-hccf-rq55Patch, Third Party Advisory
Timeline
- Published
- Last Modified
- Status
- Modified
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- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
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