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CVE-2026-33210 PUBLISHED CVSS 8.300000190734863 HIGH

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.

EPSS 0.02% · 3.4th percentile

Risk Scores

CVSS v4.0
8.300000190734863
CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:N/VA:H/SC:N/SI:N/SA:N
EPSS Score
0.02%
3.4th percentile

Affected Products

VendorProductVersions
ruby-langjson2.16.0, 2.14.0, 2.18.0
RubyGemsjson2.16.0, 2.18.0, 2.14.0
rubyjson>= 2.14.0, < 2.15.2.1, >= 2.18.0, < 2.19.2, >= 2.16.0, < 2.17.1.2

Timeline

References

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