{"action":"Upgrade ruby-oj to 3.16.3-1+deb13u1 or later.","affected":[{"fixed":"3.16.3-1+deb13u1","introduced":"0"}],"component":"ruby-oj","cve_ids":[],"ecosystem":"Debian","ecosystem_qualifier":"Debian:13","exploited":false,"fixed_versions":["3.16.3-1+deb13u1"],"id":"tcs_01M5NSZQ42PYPZDAQ922AV4RJ4","modified_at":"2026-10-26T11:47:26.092143024Z","published_at":"2026-07-01T00:16:33.220Z","references":["https://osv.dev/vulnerability/DEBIAN-CVE-2026-54899","https://security-tracker.debian.org/tracker/CVE-2026-54899"],"severity":{"label":"unknown"},"sources":[{"source":"osv","source_id":"DEBIAN-CVE-2026-54899#Debian:13/ruby-oj","url":"https://osv.dev/vulnerability/DEBIAN-CVE-2026-54899"}],"summary":"Oj (Optimized JSON) is a JSON parser and Object marshaller packaged as a Ruby gem. Prior to version 3.17.2, disabling symbol_keys on a reused Oj::Parser instance triggers a heap use-after-free. When s"}