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…

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.

Scores

EPSS (exploitation in 30 days)

2.9% · top 13% of all CVEs (6 Nov 2026)

The list uses the assigner's score when there is one, then CISA's, then NVD's: High 7.5.

Weakness

• Use of weak TLS protocols
• CWE-327 (opens in a new tab)All about CWE-327 and its CVEs

Affected products

• Apache NiFi

  • affected Apache NiFi 1.2.0 to 1.11.4

Affected packages

From reviewed advisories of the GitHub Advisory Database.

• Mavenorg.apache.nifi:nifiGHSA-rfmp-jvr7-hx78 (opens in a new tab)

References (3)

• https://nifi.apache.org/security#CVE-2020-9491 (opens in a new tab)x_refsource_MISCx_transferred
• [nifi-commits] 20201005 svn commit: r1882253 - /nifi/site/trunk/security.html (opens in a new tab)mailing-listx_refsource_MLISTx_transferred
• [nifi-commits] 20201005 [nifi-site] branch main updated: Minor correction for CVE-2020-9491, Jira number from NIFI-7401 to NIFI-7407. (opens in a new tab)mailing-listx_refsource_MLISTx_transferred

Sources

The same CVE in the primary databases and aggregators, to check against.

• CVE.org record (opens in a new tab)
• CVE List JSON (GitHub) (opens in a new tab)
• NVD (opens in a new tab)
• FIRST EPSS (opens in a new tab)
• OSV.dev (opens in a new tab)
• GitHub Advisory GHSA-rfmp-jvr7-hx78 (opens in a new tab)
• CIRCL Vulnerability-Lookup (opens in a new tab)

Badge for a README or a ticket

[![CVE-2020-9491](https://trackcve.app/badge/CVE-2020-9491.svg)](https://trackcve.app/cve/CVE-2020-9491)

Record last updated 4 Aug 2024, 10:26 UTC.