7.5

CVE-2020-9491: apache nifi

CVSS: 7.5v3.1HighModified
AliasesGHSA-rfmp-jvr7-hx78BIT-nifi-2020-9491
Published 01-10-2020Last modified 04-08-2024
Open JSON

Vulnerability summary

CVE-2020-9491 is a high (CVSS 7.5) vulnerability in apache nifi. EPSS estimates a 2.87% chance of exploitation in the next 30 days, higher than 86.5% of scored vulnerabilities.

Overall risk
31/100
0100
Medium · default modelHow is this calculated?
CVSS score
7.5/10
010
High · v3.1 (NVD)
EPSS score
2.87%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Timeline

  1. 01-10-2020
    PublishedVulnerability first disclosed.
  2. 04-08-2024
    Last modifiedVulnerability information updated.

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.

CVSS metrics

3 scores · 2 sources · 2 versions

EPSS trend

Probability

2.87%

Chance of exploitation in the next 30 days

Percentile

87%

Versus all other CVEs

30-day change

0.00 pp

From 2.87% on 18-09-2026

18-09-202618-10-2026
EPSS score
2.87%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Apache1 product
  • nifi≥ 1.0.0, ≤ 1.11.4
Org.apache.nifi1 product
  • nifi≥ 1.2.0, < 1.12.0-RC1

2 vendors · 2 products

References

8 links