CVE-2022-21653

CVE-2022-21653 is a denial-of-service vulnerability affecting the open-source JSON parser, Jawn, specifically versions prior to 1.3.1. It impacts applications that extend Jawn's SimpleFacade or MutableFacade without overriding objectContext(), making them susceptible to hash collision attacks. The vulnerability carries a CVSS score of 7.5 (HIGH), indicating it can be exploited remotely with low attack complexity, leading to a complete loss of availability. There is currently no evidence of active exploitation, public exploit code, or significant community discussion surrounding this CVE.