{"action":"Upgrade com.thoughtworks.xstream:xstream to 1.4.18 or later.","affected":[{"fixed":"1.4.18","introduced":"0"}],"component":"com.thoughtworks.xstream:xstream","cve_ids":["CVE-2021-39146"],"ecosystem":"Maven","epss":0.143,"exploited":false,"fixed_versions":["1.4.18"],"ghsa_id":"GHSA-p8pq-r894-fm8f","id":"tcs_01M5N9718Y2SS89DT8MDB98AGM","modified_at":"2026-07-08T06:28:59.637179040Z","published_at":"2021-08-25T14:47:57Z","references":["https://osv.dev/vulnerability/GHSA-p8pq-r894-fm8f","https://github.com/x-stream/xstream/security/advisories/GHSA-p8pq-r894-fm8f","https://nvd.nist.gov/vuln/detail/CVE-2021-39146","https://github.com/x-stream/xstream","https://lists.debian.org/debian-lts-announce/2021/09/msg00017.html","https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/22KVR6B5IZP3BGQ3HPWIO2FWWCKT3DHP","https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/PVPHZA7VW2RRSDCOIPP2W6O5ND254TU7","https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/QGXIU3YDPG6OGTDHMBLAFN7BPBERXREB","https://security.netapp.com/advisory/ntap-20210923-0003","https://www.debian.org/security/2021/dsa-5004","https://www.oracle.com/security-alerts/cpuapr2022.html","https://www.oracle.com/security-alerts/cpujan2022.html","https://www.oracle.com/security-alerts/cpujul2022.html","https://x-stream.github.io/CVE-2021-39146.html"],"severity":{"label":"high","score":8.5},"sources":[{"source":"osv","source_id":"GHSA-p8pq-r894-fm8f","url":"https://osv.dev/vulnerability/GHSA-p8pq-r894-fm8f"}],"summary":"XStream is vulnerable to an Arbitrary Code Execution attack"}