{"action":"Upgrade com.thoughtworks.xstream:xstream to 1.4.19 or later.","affected":[{"fixed":"1.4.19","introduced":"0"}],"component":"com.thoughtworks.xstream:xstream","cve_ids":["CVE-2021-43859"],"ecosystem":"Maven","epss":0.07934,"exploited":false,"fixed_versions":["1.4.19"],"ghsa_id":"GHSA-rmr5-cpv2-vgjf","id":"tcs_01M5N9C3QAEGBKGCKZXWNBW31X","modified_at":"2026-07-08T06:29:15.393142409Z","published_at":"2022-02-01T00:48:15Z","references":["https://osv.dev/vulnerability/GHSA-rmr5-cpv2-vgjf","https://github.com/x-stream/xstream/security/advisories/GHSA-rmr5-cpv2-vgjf","https://nvd.nist.gov/vuln/detail/CVE-2021-43859","https://github.com/x-stream/xstream/commit/e8e88621ba1c85ac3b8620337dd672e0c0c3a846","https://github.com/x-stream/xstream","https://lists.debian.org/debian-lts-announce/2022/02/msg00018.html","https://lists.debian.org/debian-lts-announce/2024/12/msg00023.html","https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/VACQYG356OHUTD5WQGAQ4L2TTFTAV3SJ","https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/XODFRE2ZL64FICBJDOPWOLPTSSAI4U7X","https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/VACQYG356OHUTD5WQGAQ4L2TTFTAV3SJ","https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/XODFRE2ZL64FICBJDOPWOLPTSSAI4U7X","https://www.oracle.com/security-alerts/cpuapr2022.html","https://www.oracle.com/security-alerts/cpujul2022.html","https://x-stream.github.io/CVE-2021-43859.html","http://www.openwall.com/lists/oss-security/2022/02/09/1"],"severity":{"label":"high","score":7.5},"sources":[{"source":"osv","source_id":"GHSA-rmr5-cpv2-vgjf","url":"https://osv.dev/vulnerability/GHSA-rmr5-cpv2-vgjf"}],"summary":"Denial of Service by injecting highly recursive collections or maps in XStream"}