7.5

CVE-2020-9487: apache nifi

CVSS: 7.5v3.1HighModified
AliasesGHSA-3pp3-77j6-8ph6BIT-nifi-2020-9487
Published 01-10-2020Last modified 04-08-2024
Open JSON

Vulnerability summary

CVE-2020-9487 is a high (CVSS 7.5) vulnerability in apache nifi. EPSS estimates a 3.05% chance of exploitation in the next 30 days, higher than 87.3% 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
3.05%
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 1.0.0 to 1.11.4, the NiFi download token (one-time password) mechanism used a fixed cache size and did not authenticate a request to create a download token, only when attempting to use the token to access the content. An unauthenticated user could repeatedly request download tokens, preventing legitimate users from requesting download tokens.

CVSS metrics

3 scores · 2 sources · 2 versions

EPSS trend

Probability

3.05%

Chance of exploitation in the next 30 days

Percentile

87%

Versus all other CVEs

30-day change

0.00 pp

From 3.05% on 18-09-2026

18-09-202618-10-2026
EPSS score
3.05%

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≥ 1.0.0, < 1.12.0-RC1

2 vendors · 2 products

References

3 links