cvedb.io
CVE-2026-33210
CRITICAL · CVSS 9.1
EPSS exploitation probability: 0%
Published 2026-03-20T23:16:46.010 · Last modified 2026-06-30T03:18:37.670

Summary

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.

Affected products

ruby-lang — json

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References

This product uses data from the NVD API but is not endorsed or certified by the NVD. Informational only; not professional security advice.