CVE-2026-54897

Oj (Optimized JSON) is a JSON parser and Object marshaller packaged as a Ruby gem. Prior to 3.17.2, Oj::Doc iterators (each_value, each_child, each_leaf) were vulnerable to a heap use-after-free. When a Ruby block yielded during iteration calls doc.close or d.close, the document's heap memory is freed while the C iterator is still running. When control returns from the block, the iterator reads from the freed region, producing a use-after-free accessible from pure Ruby. This issue has been fixed in version 3.17.2.

CVSS

No CVSS.

References

Link	Resource
https://github.com/ohler55/oj/security/advisories/GHSA-9ppp-w3g4-fh4q

Configurations

No configuration.

History

01 Jul 2026, 00:16

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-07-01 00:16

Updated : 2026-07-01 00:16

NVD link : CVE-2026-54897

Mitre link : CVE-2026-54897

CVE.ORG link : CVE-2026-54897

JSON object : View

Products Affected

No product.

CWE

CWE-416

Use After Free

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