{"action":"Upgrade libxstream-java to 1.4.19-1 or later.","affected":[{"fixed":"1.4.19-1","introduced":"0"}],"component":"libxstream-java","cve_ids":[],"ecosystem":"Debian","ecosystem_qualifier":"Debian:12","exploited":false,"fixed_versions":["1.4.19-1"],"id":"tcs_01M5NG1T8FNHA9DR03T1S30MKS","modified_at":"2026-10-23T18:04:16.304498063Z","published_at":"2022-02-01T12:15:08.080Z","references":["https://osv.dev/vulnerability/DEBIAN-CVE-2021-43859","https://security-tracker.debian.org/tracker/CVE-2021-43859"],"severity":{"label":"high","score":7.5},"sources":[{"source":"osv","source_id":"DEBIAN-CVE-2021-43859","url":"https://osv.dev/vulnerability/DEBIAN-CVE-2021-43859"}],"summary":"XStream is an open source java library to serialize objects to XML and back again. Versions prior to 1.4.19 may allow a remote attacker to allocate 100% CPU time on the target system depending on CPU"}