{"action":"Upgrade ujson to 5.13.0-1 or later.","affected":[{"fixed":"5.13.0-1","introduced":"0"}],"component":"ujson","cve_ids":[],"ecosystem":"Debian","ecosystem_qualifier":"Debian:14","exploited":false,"fixed_versions":["5.13.0-1"],"id":"tcs_01M5NSZV1T9F7X00ZTS8S0EFEG","modified_at":"2026-10-01T03:03:26.606329875Z","published_at":"2026-06-22T22:16:50.397Z","references":["https://osv.dev/vulnerability/DEBIAN-CVE-2026-54911","https://security-tracker.debian.org/tracker/CVE-2026-54911"],"severity":{"label":"medium","score":6.5},"sources":[{"source":"osv","source_id":"DEBIAN-CVE-2026-54911#Debian:14/ujson","url":"https://osv.dev/vulnerability/DEBIAN-CVE-2026-54911"}],"summary":"UltraJSON is a fast JSON encoder and decoder written in pure C with bindings for Python 3.7+. Prior to 5.13.0, ujson.dumps() (or ujson.dump() or ujson.encode()) have a reject_bytes=False option. When"}