CVE-2022-21653

MEDIUMNVD 5.95.9—
EchelonGraph scoreMEDIUM confidence

This medium-severity CVE scores 5.9 under NVD CVSS v3. EPSS exploit probability: 0.1%, top 66% of all CVEs by exploit prediction. GitHub Security Advisory data not yet ingested — confidence will rise once GHSA publishes (typical lag: hours to days for open-source ecosystem CVEs; never for infrastructure-only CVEs).

Triggered by: NVD CVSS baseline
Sources: epss, nvd
Elevated
5.9
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS: 1%CVSS: 5.9Exploit: NoneExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

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.

CVSS v3
5.9
EG Score
5.9(medium)
EPSS
52.1%
KEV
Not listed

Published

January 5, 2022

Last Modified

November 21, 2024

References (4)

Affected Packages

(18 across 1 ecosystem)
Maven(18)
PackageVulnerable rangeFixed inDependents
org.typelevel:jawn-parser_0.251.0.0——
org.typelevel:jawn-parser_0.271.0.0, 1.0.1, 1.0.2——
org.typelevel:jawn-parser_2.100.14.0, 0.14.1——
org.typelevel:jawn-parser_2.110.14.0 ... 1.0.0-RC2 (6 versions)——
org.typelevel:jawn-parser_2.120.14.0 ... 1.3.1 (18 versions)1.3.2—
org.typelevel:jawn-parser_2.130.14.2 ... 1.3.1 (16 versions)1.3.2—
org.typelevel:jawn-parser_2.13.0-M50.14.0, 0.14.1——
org.typelevel:jawn-parser_2.13.0-RC10.14.2——
org.typelevel:jawn-parser_2.13.0-RC20.14.2——
org.typelevel:jawn-parser_2.13.0-RC30.14.2——
org.typelevel:jawn-parser_31.1.2, 1.2.0, 1.3.0, 1.3.11.3.2—
org.typelevel:jawn-parser_3.0.0-M11.0.1, 1.0.2——
org.typelevel:jawn-parser_3.0.0-M21.0.2, 1.0.3——
org.typelevel:jawn-parser_3.0.0-M31.0.3, 1.1.0——
org.typelevel:jawn-parser_3.0.0-RC11.1.0, 1.1.1——
org.typelevel:jawn-parser_3.0.0-RC21.1.1, 1.1.2——
org.typelevel:jawn-parser_3.0.0-RC31.1.2——
org.typelevel:jawn-parserg———

Weakness Classification(2)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 7× in last 7d / 45× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

  1. 2026-07-11 08:25 UTCEPSS rescore
  2. 2026-07-09 19:07 UTCEPSS rescore
  3. 2026-07-08 15:12 UTCEPSS rescore
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  14. 2026-06-30 00:03 UTCOSV refresh
  15. 2026-06-29 14:04 UTCEPSS rescore
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  17. 2026-06-28 14:06 UTCEPSS rescore
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  1. 2026-06-22 14:24 UTCEPSS rescore
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  4. 2026-06-21 01:58 UTCEPSS rescore
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  6. 2026-06-19 19:24 UTCEPSS rescore
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  8. 2026-06-18 17:51 UTCEPSS rescore
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  10. 2026-06-17 17:51 UTCEPSS rescore
  11. 2026-06-17 17:51 UTCEPSS rescore
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  13. 2026-06-15 17:46 UTCEPSS rescore
  14. 2026-06-14 23:15 UTCEPSS rescore
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  16. 2026-06-13 22:58 UTCEPSS rescore
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  18. 2026-06-12 23:10 UTCEPSS rescore
  19. 2026-06-12 23:10 UTCEPSS rescore
  20. 2026-06-12 12:40 UTCOSV refresh
  21. 2026-06-11 13:58 UTCEPSS rescore
  22. 2026-06-11 13:58 UTCEPSS rescore
  23. 2026-06-10 22:16 UTCEPSS rescore
  24. 2026-06-10 13:20 UTCEPSS rescore
  25. 2026-06-08 14:15 UTCEPSS rescore
  26. 2026-06-08 14:15 UTCEPSS rescore
  27. 2026-06-07 15:23 UTCEPSS rescore
  28. 2026-06-07 15:23 UTCEPSS rescore
  29. 2026-06-06 13:46 UTCEPSS rescore
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  31. 2026-06-05 22:45 UTCEPSS rescore
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  39. 2026-06-01 13:50 UTCEPSS rescore
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  42. 2026-05-31 22:29 UTCEPSS rescore
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  44. 2026-05-31 00:15 UTCEPSS rescore
  45. 2026-05-31 00:15 UTCEPSS rescore
  46. 2026-05-29 13:42 UTCEPSS rescore
  47. 2026-05-28 13:43 UTCEPSS rescore
  48. 2026-05-28 13:43 UTCEPSS rescore
  49. 2026-05-28 13:43 UTCEPSS rescore
  50. 2026-05-27 13:39 UTCEPSS rescore
  51. 2026-05-27 13:39 UTCEPSS rescore
  52. 2026-05-26 13:43 UTCEPSS rescore
  53. 2026-05-26 07:17 UTCEPSS rescore
  54. 2026-05-26 07:17 UTCEPSS rescore
  55. 2026-05-26 05:18 UTCEG score recompute

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2022-21653?
CVE-2022-21653 is a medium vulnerability published on January 5, 2022. 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,…
When was CVE-2022-21653 disclosed?
CVE-2022-21653 was first published in the National Vulnerability Database on January 5, 2022, with the most recent update on November 21, 2024. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2022-21653 actively exploited?
CVE-2022-21653 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 52.1% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2022-21653?
CVE-2022-21653 has a CVSS v3 base score of 5.9 (NVD).
How do I remediate CVE-2022-21653?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2022-21653, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

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