{"id":"CVE-2017-5636","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.","aliases":["GHSA-jrcc-7jf5-3pxg"],"modified":"2026-04-10T04:02:35.214948Z","published":"2017-10-19T20:29:00.297Z","references":[{"type":"ADVISORY","url":"http://www.securityfocus.com/bid/96731"},{"type":"REPORT","url":"https://nifi.apache.org/security.html#CVE-2017-5636"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/apache/nifi","events":[{"introduced":"0"},{"last_affected":"f5629062c5e2a6c55fb62255aee74c4f25d93e7b"},{"introduced":"0"},{"last_affected":"421d5e61553e5fa160af9e0cc9fdc237af46906d"},{"introduced":"0"},{"last_affected":"5536f690a81418955442d52687695f65f0a44cd0"},{"introduced":"0"},{"last_affected":"a92f2e36ed6be695e4dc6f624f6b3a96e6d1a57c"}],"database_specific":{"versions":[{"introduced":"0"},{"last_affected":"0.7.0"},{"introduced":"0"},{"last_affected":"0.7.1"},{"introduced":"0"},{"last_affected":"1.1.0"},{"introduced":"0"},{"last_affected":"1.1.1"}]}}],"versions":["nifi-0.2.0-incubating-RC1","nifi-0.4.1","nifi-0.4.1-RC1","nifi-0.6.0","nifi-0.6.0-RC2","nifi-0.7.0-RC2","nifi-0.7.1-RC1","nifi-1.1.0-RC2","nifi-1.1.1-RC1","rel/nifi-0.7.0","rel/nifi-0.7.1","rel/nifi-1.1.0","rel/nifi-1.1.1"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2017-5636.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"}]}