{"id":"CVE-2017-5636","aliases":["GHSA-jrcc-7jf5-3pxg"],"url":"https://o3.security/vulnerability/CVE-2017-5636","summary":"Injection in Apache NiFi","details":"In Apache NiFi before 0.7.2 and 1.x before 1.1.2 in a cluster environment, the proxy chain serialization/deserialization is vulnerable to an injection attack where a carefully crafted username could impersonate another user and gain their permissions on a replicated request to another node.","published":"2017-10-19T20:29:00.297Z","modified":"2026-07-08T11:48:43.288429Z","cvss":{"score":9.8,"severity":"CRITICAL","vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"},"epss":null,"cisaKev":null,"exploitsKnown":0,"affectedPackages":[{"ecosystem":"Maven","name":"org.apache.nifi:nifi","fixedVersion":"0.7.2"},{"ecosystem":"Maven","name":"org.apache.nifi:nifi","fixedVersion":"1.1.2"}],"fix":null,"references":[{"type":"ADVISORY","url":"http://www.securityfocus.com/bid/96731"},{"type":"REPORT","url":"https://nifi.apache.org/security.html#CVE-2017-5636"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-07-08T11:48:43.288429Z"}}