{"id":"CVE-2020-9487","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","GHSA-3pp3-77j6-8ph6"],"modified":"2026-04-10T04:28:43.512632Z","published":"2020-10-01T20:15:14.253Z","references":[{"type":"ADVISORY","url":"https://nifi.apache.org/security#CVE-2020-9487"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/apache/nifi","events":[{"introduced":"74d5224783dfdc513f6b3ad5ed96671d3c581707"},{"last_affected":"4d940bb151eb8d250b0319318b96d23c4a9819ae"}],"database_specific":{"versions":[{"introduced":"1.0.0"},{"last_affected":"1.11.4"}]}}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2020-9487.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"}]}