{"id":"BIT-nifi-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":["CVE-2020-13940","GHSA-q4xf-3pmq-3hw8"],"modified":"2026-09-08T08:48:16.946309574Z","published":"2025-09-12T11:46:34.845Z","database_specific":{"cpes":["cpe:2.3:a:apache:nifi:*:*:*:*:*:*:*:*"],"severity":"Medium"},"references":[{"type":"ADVISORY","url":"https://nifi.apache.org/security#CVE-2020-13940"},{"type":"WEB","url":"https://nvd.nist.gov/vuln/detail/CVE-2020-13940"}],"affected":[{"package":{"name":"nifi","ecosystem":"Bitnami","purl":"pkg:bitnami/nifi"},"ranges":[{"type":"SEMVER","events":[{"introduced":"1.0.0"},{"last_affected":"1.11.4"}]}],"database_specific":{"source":"https://github.com/bitnami/vulndb/tree/main/data/nifi/BIT-nifi-2020-13940.json"},"severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N"}]}],"schema_version":"1.9.0"}