{"id":"GHSA-3pp3-77j6-8ph6","summary":"Missing Authentication for Critical Function in Apache NiFi","details":"In Apache NiFi 1.0.0 to 1.11.4, the NiFi download token (one-time password) mechanism used a fixed cache size and did not authenticate a request to create a download token, only when attempting to use the token to access the content. An unauthenticated user could repeatedly request download tokens, preventing legitimate users from requesting download tokens.","aliases":["BIT-nifi-2020-9487","CVE-2020-9487"],"modified":"2025-09-15T07:43:37.966279Z","published":"2022-01-06T20:41:04Z","database_specific":{"cwe_ids":["CWE-306"],"severity":"HIGH","github_reviewed":true,"github_reviewed_at":"2021-03-29T16:45:40Z","nvd_published_at":"2020-10-01T20:15:00Z"},"references":[{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2020-9487"},{"type":"WEB","url":"https://github.com/apache/nifi/commit/01e42dfb3291c3a3549023edadafd2d8023f3042"},{"type":"WEB","url":"https://nifi.apache.org/security#CVE-2020-9487"}],"affected":[{"package":{"name":"org.apache.nifi:nifi","ecosystem":"Maven","purl":"pkg:maven/org.apache.nifi/nifi"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"1.0.0"},{"fixed":"1.12.0-RC1"}]}],"versions":["1.0.0","1.0.1","1.1.0","1.1.1","1.1.2","1.10.0","1.11.0","1.11.1","1.11.2","1.11.3","1.11.4","1.2.0","1.3.0","1.4.0","1.5.0","1.6.0","1.7.0","1.7.1","1.8.0","1.9.0","1.9.1","1.9.2"],"database_specific":{"last_known_affected_version_range":"\u003c= 1.11.4","source":"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2022/01/GHSA-3pp3-77j6-8ph6/GHSA-3pp3-77j6-8ph6.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"}]}