{"id":"CVE-2017-12632","aliases":["GHSA-w4x6-j349-9r57"],"url":"https://o3.security/vulnerability/CVE-2017-12632","summary":"Apache NiFi host header poisoning issue","details":"A malicious host header in an incoming HTTP request could cause NiFi to load resources from an external server. The fix to sanitize host headers and compare to a controlled whitelist was applied on the Apache NiFi 1.5.0 release. Users running a prior 1.x release should upgrade to the appropriate release.","published":"2018-01-23T22:29:00.277Z","modified":"2026-07-08T10:54:35.786966Z","cvss":{"score":7.5,"severity":"HIGH","vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N"},"epss":null,"cisaKev":null,"exploitsKnown":0,"affectedPackages":[{"ecosystem":"Maven","name":"org.apache.nifi:nifi","fixedVersion":"1.5.0"}],"fix":null,"references":[{"type":"ADVISORY","url":"https://nifi.apache.org/security.html#CVE-2017-12632"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-07-08T10:54:35.786966Z"}}