{"action":"Upgrade com.thoughtworks.xstream:xstream to 1.4.15 or later.","affected":[{"fixed":"1.4.15","introduced":"0"}],"component":"com.thoughtworks.xstream:xstream","cve_ids":["CVE-2020-26259"],"ecosystem":"Maven","epss":0.82392,"exploited":false,"fixed_versions":["1.4.15"],"ghsa_id":"GHSA-jfvx-7wrx-43fh","id":"tcs_01M5N92TG451CNHN4S9CRT1X97","modified_at":"2026-07-08T05:59:37.751827555Z","published_at":"2020-12-21T16:28:26Z","references":["https://osv.dev/vulnerability/GHSA-jfvx-7wrx-43fh","https://github.com/x-stream/xstream/security/advisories/GHSA-jfvx-7wrx-43fh","https://nvd.nist.gov/vuln/detail/CVE-2020-26259","https://github.com/x-stream/xstream","https://lists.apache.org/thread.html/r97993e3d78e1f5389b7b172ba9f308440830ce5f051ee62714a0aa34@%3Ccommits.struts.apache.org%3E","https://lists.debian.org/debian-lts-announce/2020/12/msg00042.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-20210409-0005","https://www.debian.org/security/2021/dsa-4828","https://x-stream.github.io/CVE-2020-26259.html"],"severity":{"label":"medium","score":6.8},"sources":[{"source":"osv","source_id":"GHSA-jfvx-7wrx-43fh","url":"https://osv.dev/vulnerability/GHSA-jfvx-7wrx-43fh"}],"summary":"XStream vulnerable to an Arbitrary File Deletion on the local host when unmarshalling"}