{"id":"CVE-2022-21653","aliases":["EUVD-2022-0702","GHSA-vc89-hccf-rq55","UBUNTU-CVE-2022-21653","openSUSE-SU-2022:0011-1","openSUSE-SU-2022:0045-1","openSUSE-SU-2022:0106-1","openSUSE-SU-2024:11718-1"],"status":"published","title":"Hash collision in typelevel jawn","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.","severity":{"version":"3.1","score":5.9,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"medium","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-11","score":0.0082,"percentile":0.57677,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-326","CWE-400"],"published":"2022-01-05T21:00:12Z","modified":"2026-10-28T02:30:54Z","fixes":[{"ecosystem":"Maven","package":"org.typelevel:jawn-parser_0.25","fixed_in":["1.3.2"],"sources":["ghsa"]},{"ecosystem":"Maven","package":"org.typelevel:jawn-parserg","fixed_in":["1.3.2"],"sources":["ghsa"]},{"ecosystem":"Maven","package":"org.typelevel:jawn-parser_0.27","fixed_in":["1.3.2"],"sources":["ghsa"]},{"ecosystem":"Maven","package":"org.typelevel:jawn-parser_2.10","fixed_in":["1.3.2"],"sources":["ghsa"]},{"ecosystem":"Maven","package":"org.typelevel:jawn-parser_2.11","fixed_in":["1.3.2"],"sources":["ghsa"]},{"ecosystem":"Maven","package":"org.typelevel:jawn-parser_2.12","fixed_in":["1.3.2"],"sources":["ghsa","osv"]},{"ecosystem":"Maven","package":"org.typelevel:jawn-parser_2.13","fixed_in":["1.3.2"],"sources":["ghsa","osv"]},{"ecosystem":"Maven","package":"org.typelevel:jawn-parser_2.13.0-M5","fixed_in":["1.3.2"],"sources":["ghsa"]},{"ecosystem":"Maven","package":"org.typelevel:jawn-parser_2.13.0-RC1","fixed_in":["1.3.2"],"sources":["ghsa"]},{"ecosystem":"Maven","package":"org.typelevel:jawn-parser_2.13.0-RC2","fixed_in":["1.3.2"],"sources":["ghsa"]},{"ecosystem":"Maven","package":"org.typelevel:jawn-parser_2.13.0-RC3","fixed_in":["1.3.2"],"sources":["ghsa"]},{"ecosystem":"Maven","package":"org.typelevel:jawn-parser_3","fixed_in":["1.3.2"],"sources":["ghsa","osv"]},{"ecosystem":"Maven","package":"org.typelevel:jawn-parser_3.0.0-M1","fixed_in":["1.3.2"],"sources":["ghsa"]},{"ecosystem":"Maven","package":"org.typelevel:jawn-parser_3.0.0-M2","fixed_in":["1.3.2"],"sources":["ghsa"]},{"ecosystem":"Maven","package":"org.typelevel:jawn-parser_3.0.0-M3","fixed_in":["1.3.2"],"sources":["ghsa"]},{"ecosystem":"Maven","package":"org.typelevel:jawn-parser_3.0.0-RC1","fixed_in":["1.3.2"],"sources":["ghsa"]},{"ecosystem":"Maven","package":"org.typelevel:jawn-parser_3.0.0-RC2","fixed_in":["1.3.2"],"sources":["ghsa"]},{"ecosystem":"Maven","package":"org.typelevel:jawn-parser_3.0.0-RC3","fixed_in":["1.3.2"],"sources":["ghsa"]},{"ecosystem":"SUSE:Package Hub 15 SP3","package":"jawn","fixed_in":["0.14.1-bp153.2.3.1"],"sources":["osv"]},{"ecosystem":"openSUSE:Leap 15.3","package":"jawn","fixed_in":["0.14.1-bp153.2.3.1","0.14.1-3.3.1"],"sources":["osv"]},{"ecosystem":"SUSE:Package Hub 15 SP2","package":"jawn","fixed_in":["0.14.1-bp152.2.3.1"],"sources":["osv"]}],"affected":[{"source":"ghsa","ecosystem":"Maven","package":"org.typelevel:jawn-parser_0.25","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.3.2"}]}]},{"source":"ghsa","ecosystem":"Maven","package":"org.typelevel:jawn-parserg","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.3.2"}]}]},{"source":"ghsa","ecosystem":"Maven","package":"org.typelevel:jawn-parser_0.27","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.3.2"}]}]},{"source":"ghsa","ecosystem":"Maven","package":"org.typelevel:jawn-parser_2.10","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.3.2"}]}]},{"source":"ghsa","ecosystem":"Maven","package":"org.typelevel:jawn-parser_2.11","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.3.2"}]}]},{"source":"ghsa","ecosystem":"Maven","package":"org.typelevel:jawn-parser_2.12","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.3.2"}]}]},{"source":"ghsa","ecosystem":"Maven","package":"org.typelevel:jawn-parser_2.13","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.3.2"}]}]},{"source":"ghsa","ecosystem":"Maven","package":"org.typelevel:jawn-parser_2.13.0-M5","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.3.2"}]}]},{"source":"ghsa","ecosystem":"Maven","package":"org.typelevel:jawn-parser_2.13.0-RC1","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.3.2"}]}]},{"source":"ghsa","ecosystem":"Maven","package":"org.typelevel:jawn-parser_2.13.0-RC2","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.3.2"}]}]},{"source":"ghsa","ecosystem":"Maven","package":"org.typelevel:jawn-parser_2.13.0-RC3","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.3.2"}]}]},{"source":"ghsa","ecosystem":"Maven","package":"org.typelevel:jawn-parser_3","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.3.2"}]}]},{"source":"ghsa","ecosystem":"Maven","package":"org.typelevel:jawn-parser_3.0.0-M1","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.3.2"}]}]},{"source":"ghsa","ecosystem":"Maven","package":"org.typelevel:jawn-parser_3.0.0-M2","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.3.2"}]}]},{"source":"ghsa","ecosystem":"Maven","package":"org.typelevel:jawn-parser_3.0.0-M3","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.3.2"}]}]},{"source":"ghsa","ecosystem":"Maven","package":"org.typelevel:jawn-parser_3.0.0-RC1","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.3.2"}]}]},{"source":"ghsa","ecosystem":"Maven","package":"org.typelevel:jawn-parser_3.0.0-RC2","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.3.2"}]}]},{"source":"ghsa","ecosystem":"Maven","package":"org.typelevel:jawn-parser_3.0.0-RC3","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.3.2"}]}]},{"source":"osv","ecosystem":"Maven","package":"org.typelevel:jawn-parser_0.25","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.0.0"]},{"source":"osv","ecosystem":"Maven","package":"org.typelevel:jawn-parserg","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}]},{"source":"osv","ecosystem":"Maven","package":"org.typelevel:jawn-parser_0.27","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.0.0","1.0.1","1.0.2"]},{"source":"osv","ecosystem":"Maven","package":"org.typelevel:jawn-parser_2.10","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["0.14.0","0.14.1"]},{"source":"osv","ecosystem":"Maven","package":"org.typelevel:jawn-parser_2.11","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["0.14.0","0.14.1","0.14.2","0.14.3","1.0.0-RC1","1.0.0-RC2"]},{"source":"osv","ecosystem":"Maven","package":"org.typelevel:jawn-parser_2.12","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.3.2"}]}],"versions":["0.14.0","0.14.1","0.14.2","0.14.3","1.0.0","1.0.0-RC1","1.0.0-RC2","1.0.0-RC3","1.0.0-RC4","1.0.1","1.0.2","1.0.3","1.1.0","1.1.1","1.1.2","1.2.0","1.3.0","1.3.1"]},{"source":"osv","ecosystem":"Maven","package":"org.typelevel:jawn-parser_2.13","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.3.2"}]}],"versions":["0.14.2","0.14.3","1.0.0","1.0.0-RC1","1.0.0-RC2","1.0.0-RC3","1.0.0-RC4","1.0.1","1.0.2","1.0.3","1.1.0","1.1.1","1.1.2","1.2.0","1.3.0","1.3.1"]},{"source":"osv","ecosystem":"Maven","package":"org.typelevel:jawn-parser_2.13.0-M5","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["0.14.0","0.14.1"]},{"source":"osv","ecosystem":"Maven","package":"org.typelevel:jawn-parser_2.13.0-RC1","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["0.14.2"]},{"source":"osv","ecosystem":"Maven","package":"org.typelevel:jawn-parser_2.13.0-RC2","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["0.14.2"]},{"source":"osv","ecosystem":"Maven","package":"org.typelevel:jawn-parser_2.13.0-RC3","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["0.14.2"]},{"source":"osv","ecosystem":"Maven","package":"org.typelevel:jawn-parser_3","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.3.2"}]}],"versions":["1.1.2","1.2.0","1.3.0","1.3.1"]},{"source":"osv","ecosystem":"Maven","package":"org.typelevel:jawn-parser_3.0.0-M1","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.0.1","1.0.2"]},{"source":"osv","ecosystem":"Maven","package":"org.typelevel:jawn-parser_3.0.0-M2","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.0.2","1.0.3"]},{"source":"osv","ecosystem":"Maven","package":"org.typelevel:jawn-parser_3.0.0-M3","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.0.3","1.1.0"]},{"source":"osv","ecosystem":"Maven","package":"org.typelevel:jawn-parser_3.0.0-RC1","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.1.0","1.1.1"]},{"source":"osv","ecosystem":"Maven","package":"org.typelevel:jawn-parser_3.0.0-RC2","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.1.1","1.1.2"]},{"source":"osv","ecosystem":"Maven","package":"org.typelevel:jawn-parser_3.0.0-RC3","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.1.2"]},{"source":"osv","ecosystem":"Ubuntu:20.04:LTS","package":"jawn","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["0.11.1+really0.6.0-1"]},{"source":"osv","ecosystem":"Ubuntu:22.04:LTS","package":"jawn","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["0.11.1+really0.6.0-1"]},{"source":"osv","ecosystem":"Ubuntu:24.04:LTS","package":"jawn","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["0.11.1+really0.6.0-1"]},{"source":"osv","ecosystem":"Ubuntu:25.10","package":"jawn","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["0.11.1+really0.6.0-1"]},{"source":"osv","ecosystem":"Ubuntu:26.10","package":"jawn","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["0.11.1+really0.6.0-1build1"]},{"source":"osv","ecosystem":"Ubuntu:26.04:LTS","package":"jawn","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["0.11.1+really0.6.0-1","0.11.1+really0.6.0-1build1"]},{"source":"osv","ecosystem":"SUSE:Package Hub 15 SP3","package":"jawn","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.14.1-bp153.2.3.1"}]}]},{"source":"osv","ecosystem":"openSUSE:Leap 15.3","package":"jawn","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.14.1-bp153.2.3.1"}]}]},{"source":"osv","ecosystem":"SUSE:Package Hub 15 SP2","package":"jawn","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.14.1-bp152.2.3.1"}]}]},{"source":"osv","ecosystem":"openSUSE:Leap 15.3","package":"jawn","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.14.1-3.3.1"}]}]}],"products":[{"vendor":"typelevel","product":"jawn"}],"references":[{"url":"https://github.com/typelevel/jawn/security/advisories/GHSA-vc89-hccf-rq55","tags":["x_refsource_CONFIRM","x_transferred","Patch","Third Party Advisory","advisory","web","report"]},{"url":"https://github.com/typelevel/jawn/pull/390","tags":["x_refsource_MISC","x_transferred","Exploit","Issue Tracking","Patch","Third Party Advisory","fix","web","report"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2022-21653","tags":["advisory"]},{"url":"https://github.com/advisories/GHSA-vc89-hccf-rq55"},{"url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2022/21xxx/CVE-2022-21653.json","tags":["advisory"]},{"url":"https://github.com/typelevel/jawn","tags":["package"]},{"url":"https://ubuntu.com/security/CVE-2022-21653","tags":["report"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2022-21653","tags":["report"]},{"url":"https://lists.opensuse.org/archives/list/security-announce@lists.opensuse.org/thread/LN5Z3Y5OA2VGDDD23VAZE2P4IULBASWF/","tags":["advisory"]},{"url":"https://bugzilla.suse.com/1194358","tags":["report"]},{"url":"https://www.suse.com/security/cve/CVE-2022-21653","tags":["web"]},{"url":"https://lists.opensuse.org/archives/list/security-announce@lists.opensuse.org/thread/JX7DHIBOHVUYZIPBBRVCZ2DBCRAZALDM/","tags":["advisory"]},{"url":"https://lists.opensuse.org/archives/list/security-announce@lists.opensuse.org/thread/OBUO7H3LKGBHC4SODDIXNRMKJH3PIZ7M/","tags":["advisory"]},{"url":"","tags":["advisory"]}],"sources":{"cve":[{"id":"CVE-2022-21653","title":"Hash collision in typelevel jawn","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.","status":"published","published":"2022-01-05T21:00:12Z","modified":"2025-04-22T18:34:05.348Z","cvss":[{"version":"3.1","score":5.9,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"medium","assessor":"cna"}],"cwes":["CWE-400"],"updated_at":"2026-11-02T14:34:29.057251Z"}],"euvd":[{"id":"EUVD-2022-0702","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.","status":"published","published":"2022-01-05T21:00:12Z","modified":"2025-04-22T18:34:05Z","cvss":[{"version":"3.1","score":5.9,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"medium"}],"updated_at":"2026-11-02T20:52:15.026784Z"}],"ghsa":[{"id":"GHSA-vc89-hccf-rq55","title":"Hash collision in typelevel jawn","description":"### Impact\n\nExtenders of the `org.typelevel.jawn.SimpleFacade` and `org.typelevel.jawn.MutableFacade` who don't override `objectContext()` are vulnerable to a hash collision attack.  Most applications do not implement these traits directly, but inherit from a library:\n\nAffected implementations include:\n* `org.http4s` :: `http4s-play-json`\n* `org.typelevel :: jawn-ast` (\u003c 0.8.0)\n* `org.typelevel :: jawn-play` (discontinued)\n* `org.typelevel :: jawn-rojoma` (discontinued)\n* `org.typelevel :: jawn-spray` (discontinued)\n\nUnaffected implementations include:\n* `io.argonaut :: argonaut-jawn`\n* `io.circe :: circe-parser`\n* `org.typelevel :: jawn-ast` (\u003e= 0.8.0)\n* `org.typelevel :: jawn-json4s` (discontinued)\n* `org.typelevel :: jawn-argonaut` (discontinued)\n\n### Patches\n\n`jawn-parser-1.3.2` fixes the issue.\n\n### Workarounds\n\nOverride `objectContext()` to use a collision-safe collection.  See [the patch](https://github.com/typelevel/jawn/pull/390/files) for an example in both `SimpleFacade` and `MutableFacade`.\n\n### References\n\n* https://github.com/typelevel/jawn/pull/390\n\n### Credits\n\n* @kag0, for the report and the patch\n\n### For more information\nIf you have any questions or comments about this advisory:\n* Open an issue in [typelevel/jawn](https://github.com/typelevel/jawn)\n* E-mail a maintainer:\n  * [@rossabaker](mailto:ross@rossabaker.com)","status":"published","published":"2022-01-06T23:48:35Z","modified":"2025-12-16T22:29:16Z","cvss":[{"version":"3.1","score":5.9,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"medium"}],"cwes":["CWE-326","CWE-400"],"updated_at":"2026-11-02T14:39:13.204325Z"}],"nvd":[{"id":"CVE-2022-21653","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.","status":"published","published":"2022-01-05T21:15:07.89Z","modified":"2026-06-17T04:26:41.493Z","cvss":[{"version":"3.1","score":5.9,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"medium","assessor":"secondary"},{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high","assessor":"primary"},{"version":"2.0","score":5,"vector":"AV:N/AC:L/Au:N/C:N/I:N/A:P","level":"medium","assessor":"primary"}],"cwes":["CWE-400","CWE-326"],"updated_at":"2026-11-02T14:07:10.836864Z"}],"osv":[{"id":"CVE-2022-21653","title":"Hash collision in typelevel jawn","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.","status":"published","published":"2022-01-05T21:00:12Z","modified":"2026-10-28T02:30:54.476376904Z","cvss":[{"version":"3.1","score":5.9,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"medium"}],"cwes":["CWE-400"],"updated_at":"2026-11-02T15:44:23.655778Z"},{"id":"GHSA-vc89-hccf-rq55","title":"Hash collision in typelevel jawn","description":"### Impact\n\nExtenders of the `org.typelevel.jawn.SimpleFacade` and `org.typelevel.jawn.MutableFacade` who don't override `objectContext()` are vulnerable to a hash collision attack.  Most applications do not implement these traits directly, but inherit from a library:\n\nAffected implementations include:\n* `org.http4s` :: `http4s-play-json`\n* `org.typelevel :: jawn-ast` (\u003c 0.8.0)\n* `org.typelevel :: jawn-play` (discontinued)\n* `org.typelevel :: jawn-rojoma` (discontinued)\n* `org.typelevel :: jawn-spray` (discontinued)\n\nUnaffected implementations include:\n* `io.argonaut :: argonaut-jawn`\n* `io.circe :: circe-parser`\n* `org.typelevel :: jawn-ast` (\u003e= 0.8.0)\n* `org.typelevel :: jawn-json4s` (discontinued)\n* `org.typelevel :: jawn-argonaut` (discontinued)\n\n### Patches\n\n`jawn-parser-1.3.2` fixes the issue.\n\n### Workarounds\n\nOverride `objectContext()` to use a collision-safe collection.  See [the patch](https://github.com/typelevel/jawn/pull/390/files) for an example in both `SimpleFacade` and `MutableFacade`.\n\n### References\n\n* https://github.com/typelevel/jawn/pull/390\n\n### Credits\n\n* @kag0, for the report and the patch\n\n### For more information\nIf you have any questions or comments about this advisory:\n* Open an issue in [typelevel/jawn](https://github.com/typelevel/jawn)\n* E-mail a maintainer:\n  * [@rossabaker](mailto:ross@rossabaker.com)","status":"published","published":"2022-01-06T23:48:35Z","modified":"2025-12-16T22:56:31.776825Z","cvss":[{"version":"3.1","score":5.9,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"medium"}],"cwes":["CWE-326","CWE-400"],"updated_at":"2026-11-02T15:46:56.981655Z"},{"id":"UBUNTU-CVE-2022-21653","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.","status":"published","published":"2022-01-05T21:15:00Z","modified":"2026-10-17T12:55:56.862668777Z","cvss":[{"version":"3.1","score":5.9,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"medium"},{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"}],"updated_at":"2026-11-02T16:53:52.391598Z"},{"id":"openSUSE-SU-2022:0011-1","title":"Security update for jawn","description":"This update for jawn fixes the following issues:\n\n* CVE-2022-21653: DoS caused by a hash collision in SimpleFacade and MutableFacade (boo#1194358)\n","status":"published","published":"2022-01-11T13:01:01Z","modified":"2026-02-04T02:22:26.442138Z","updated_at":"2026-11-02T16:58:32.653274Z"},{"id":"openSUSE-SU-2022:0045-1","title":"Security update for jaw","description":"\njawn was updated to fix:\n\n* CVE-2022-21653: DoS caused by a hash collision in SimpleFacade and MutableFacade (bsc#1194358)\n","status":"published","published":"2022-02-20T13:01:31Z","modified":"2026-02-04T02:38:07.135049Z","updated_at":"2026-11-02T16:58:32.653274Z"},{"id":"openSUSE-SU-2022:0106-1","title":"Security update for jawn","description":"This update for jawn fixes the following issues:\n\n- CVE-2022-21653: Fixed DoS caused by a hash collision in SimpleFacade and MutableFacade (bsc#1194358).\n","status":"published","published":"2022-01-18T10:43:15Z","modified":"2026-02-04T04:27:27.012701Z","updated_at":"2026-11-02T16:58:32.653274Z"},{"id":"openSUSE-SU-2024:11718-1","title":"jawn-ast-0.14.1-2.1 on GA media","description":"These are all security issues fixed in the jawn-ast-0.14.1-2.1 package on the GA media of openSUSE Tumbleweed.","status":"published","published":"2024-06-15T00:00:00Z","modified":"2026-02-04T04:32:18.741194Z","updated_at":"2026-11-02T16:58:35.195147Z"}]}}