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Fencer Intel
high 7.5

CVE-2020-9487 json

Missing Authentication for Critical Function in Apache NiFi

published 6y ago modified 2mo ago also BIT-nifi-2020-9487 , EUVD-2022-0434 , GHSA-3pp3-77j6-8ph6

cvss
7.5
version 3.1, NVD
cisa kev
Not listed
not in CISA's catalog
epss
3.1%
EPSS 3.1% chance of exploitation in 30 days, percentile 87%
public exploits
0
none known

Summary

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.

Patch / fix

  • maven org.apache.nifi:nifi 1.12.0-RC1

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Exploit prediction

3.05% chance of exploitation in the next 30 days, higher than 87% of all scored CVEs (FIRST EPSS, 2026-11-09).

CVSS scores

assigned by version score vector
GitHub 3.1 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
NVD 3.1 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
NVD 2.0 5.0 AV:N/AC:L/Au:N/C:N/I:N/A:P
OSV 3.1 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Affected packages

ecosystem package affected fixed in
maven org.apache.nifi:nifi
>=1.0.0, <1.12.0-RC1
1.12.0-RC1
bitnami nifi
>=1.0.0, <=1.11.4
 no fix listed

Affected products

  • n/a Apache NiFi

Classification

Weakness
  • CWE-306 Missing Authentication for Critical Functionality

References

Sources

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