CVE-2026-33210
Ruby vulnerability analysis and mitigation

Ruby JSON is a JSON implementation for Ruby. From version 2.14.0 to before versions 2.15.2.1, 2.17.1.2, and 2.19.2, a format string injection vulnerability can lead to denial of service attacks or information disclosure, when the allow_duplicate_key: false parsing option is used to parse user supplied documents. This issue has been patched in versions 2.15.2.1, 2.17.1.2, and 2.19.2.


SourceNVD

Related Ruby vulnerabilities:

CVE ID

Severity

Score

Technologies

Component name

CISA KEV exploit

Has fix

Published date

CVE-2026-23891CRITICAL9.3
  • RubyRuby
  • decidim-core
NoYesApr 13, 2026
GHSA-2x79-gwq3-vxxmHIGH8.7
  • RubyRuby
  • iodine
NoNoApr 14, 2026
GHSA-ghmh-q25g-gxxxHIGH7.5
  • RubyRuby
  • decidim-api
NoYesApr 14, 2026
GHSA-w5xj-99cg-rccmHIGH7.5
  • RubyRuby
  • decidim-core
NoYesApr 14, 2026
GHSA-9pm8-vwc5-w2hmLOW2.1
  • RubyRuby
  • fat_free_crm
NoYesApr 14, 2026

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