CVE-2026-54897 Oj : Use-After-Free in Oj::Doc Iterators via Reentrant Close

Oj Optimized JSON is a JSON parser and Object marshaller packaged as a Ruby gem. Prior to 3.17.2, Oj::Doc iterators eachvalue, eachchild, eachleaf 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...

PT-2026-51083

Name of the Vulnerable Software and Affected Versions Oj versions prior to 3.17.2 Description Oj::Doc iterators each value, each child, each leaf are subject to a heap use-after-free. This occurs when a Ruby block yielded during iteration calls doc.close or d.close, causing the document's heap...