What is CVE-2026-54592?

CVE-2026-54592 is a high-severity vulnerability, classified under Out-of-bounds Read. CVSS score: 7.5/10. Published 2026-07-01.

How severe is CVE-2026-54592?

High severity. CVSS v3 base score is 7.5 out of 10.

CVE-2026-54592

CVE-2026-54592

Oj (Optimized JSON) is a JSON parser and Object marshaller packaged as a Ruby gem. In versions prior to 3.17.3, Oj::Doc#each_child, when invoked recursively over a deeply nested JSON document, overflows a fixed-size stack buffer and aborts…

Vulnerability class: Buffer Overflow

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

Weakness classification (CWE)

CWE-125 — Out-of-bounds Read
CWE-787 — Out-of-bounds Write

References

security-advisories@github.com (x_refsource_CONFIRM)

Frequently asked questions

What is CVE-2026-54592?: CVE-2026-54592 is a high-severity vulnerability, classified under Out-of-bounds Read. CVSS score: 7.5/10. Published 2026-07-01.
How severe is CVE-2026-54592?: High severity. CVSS v3 base score is 7.5 out of 10.