cvedb.io
CVE-2026-54696
LOW · CVSS 3.7
EPSS exploitation probability: 0%
Published 2026-06-30T23:17:28.123 · Last modified 2026-07-02T17:54:15.243

Summary

Ruby JSON is a JSON implementation for Ruby. Versions 2.9.0 through 2.19.8 are vulnerable to heap buffer overflow when the JSON generator is provided with an oversized streamed object. When streaming to an IO JSON.dump(obj, io) and JSON::State#generate(obj, io) can write past the internal JSON generator buffer when a streamed object contains an attacker-controlled string near 16 KB. Exploitation would result in a reliable process crash/denial of service. This issue has been fixed in version 2.19.9.

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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.