{"id":"CVE-2020-13940","details":"In Apache NiFi 1.0.0 to 1.11.4, the notification service manager and various policy authorizer and user group provider objects allowed trusted administrators to inadvertently configure a potentially malicious XML file. The XML file has the ability to make external calls to services (via XXE).","aliases":["BIT-nifi-2020-13940","GHSA-q4xf-3pmq-3hw8"],"modified":"2026-04-11T21:47:50.794528Z","published":"2020-10-01T20:15:13.097Z","related":["openSUSE-SU-2024:13324-1"],"references":[{"type":"ADVISORY","url":"https://nifi.apache.org/security#CVE-2020-13940"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/apache/nifi","events":[{"introduced":"74d5224783dfdc513f6b3ad5ed96671d3c581707"},{"last_affected":"4d940bb151eb8d250b0319318b96d23c4a9819ae"}],"database_specific":{"extracted_events":[{"introduced":"1.0.0"},{"last_affected":"1.11.4"}],"cpe":"cpe:2.3:a:apache:nifi:*:*:*:*:*:*:*:*","source":"CPE_FIELD"}}],"database_specific":{"source":"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2020-13940.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N"}]}