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.
Scores
CVSS v3
5.9
EPSS
0.0014
EPSS Percentile
33.8%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
CISA SSVC
Vulnrichment
Exploitation
poc
Automatable
no
Technical Impact
partial
Details
CWE
CWE-326
CWE-400
Status
published
Products (19)
org.typelevel/jawn-parser_0.25
0Maven
org.typelevel/jawn-parser_0.27
0Maven
org.typelevel/jawn-parser_2.10
0Maven
org.typelevel/jawn-parser_2.11
0Maven
org.typelevel/jawn-parser_2.12
0 - 1.3.2Maven
org.typelevel/jawn-parser_2.13
0 - 1.3.2Maven
org.typelevel/jawn-parser_2.13.0-M5
0Maven
org.typelevel/jawn-parser_2.13.0-RC1
0Maven
org.typelevel/jawn-parser_2.13.0-RC2
0Maven
org.typelevel/jawn-parser_2.13.0-RC3
0Maven
... and 9 more
Published
Jan 05, 2022
Tracked Since
Feb 18, 2026