EUVD-2026-54576

Ruby JSON is a JSON implementation for Ruby. From 2.20.0 until 2.21.2, Ruby's JSON native C extension clears the consumed JSON::ResumableParser input buffer but leaves state.start, state.cursor, and state.end pointing into released storage. When partialvalue reconstructs an incomplete object...

CVE-2026-71847

Ruby JSON: ResumableParser in the native C extension (Ruby JSON) from versions 2.20.0–2.21.2 allocates correctly but after consuming input, state.start/state.cursor/state.end point into freed storage. When partial_value processes a truncated object with duplicate keys, cursor_position dereference...