VULNERABILITY INTELLIGENCE
CVE-2020-9491
CVSS score7.5 HIGH
EPSS probability2.87%
CISA KEVNot currently listed
Published2020-10-01
Last modified2026-06-17
CVSS vectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Description
In Apache NiFi 1.2.0 to 1.11.4, the NiFi UI and API were protected by mandating TLS v1.2, as well as listening connections established by processors like ListenHTTP, HandleHttpRequest, etc. However intracluster communication such as cluster request replication, Site-to-Site, and load balanced queues continued to support TLS v1.0 or v1.1.
Weakness classification
- CWE-327: Use of a Broken or Risky Cryptographic Algorithm