CVE-2020-9486
Insertion of Sensitive Information into Log File in Apache NiFi Stateless
In Apache NiFi 1.10.0 to 1.11.4, the NiFi stateless execution engine produced log output which included sensitive property values. When a flow was triggered, the flow definition configuration JSON was printed, potentially containing sensitive values in plaintext.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- None
- User interaction
- None
What an attacker can affect
- Confidentiality
- High
- Integrity
- None
- Availability
- None
Exploit likelihood
What each source reports
NVD Score used
In Apache NiFi 1.10.0 to 1.11.4, the NiFi stateless execution engine produced log output which included sensitive property values. When a flow was triggered, the flow definition configuration JSON was printed, potentially containing sensitive values in plaintext.
- Record
CVE-2020-9486- CVSS 3.1
- 7.5 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N - CVSS 2.0
- 5.0 Medium
AV:N/AC:L/Au:N/C:P/I:N/A:N - Weakness
- CWE-532
- Updated
- 2026-11-02
CVE List No score
In Apache NiFi 1.10.0 to 1.11.4, the NiFi stateless execution engine produced log output which included sensitive property values. When a flow was triggered, the flow definition configuration JSON was printed, potentially containing sensitive values in plaintext.
- Record
CVE-2020-9486- Updated
- 2026-11-02
EUVDEUVD-2022-0596 No score
In Apache NiFi 1.10.0 to 1.11.4, the NiFi stateless execution engine produced log output which included sensitive property values. When a flow was triggered, the flow definition configuration JSON was printed, potentially containing sensitive values in plaintext.
- Record
EUVD-2022-0596- Updated
- 2026-11-03
GitHub AdvisoriesGHSA-g644-pr5v-vppf
Insertion of Sensitive Information into Log File in Apache NiFi Stateless
In Apache NiFi 1.10.0 to 1.11.4, the NiFi stateless execution engine produced log output which included sensitive property values. When a flow was triggered, the flow definition configuration JSON was printed, potentially containing sensitive values in plaintext.
- Record
GHSA-g644-pr5v-vppf- CVSS 3.1
- 7.5 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N - Weakness
- CWE-532
- Updated
- 2026-11-02
OSV
In Apache NiFi 1.10.0 to 1.11.4, the NiFi stateless execution engine produced log output which included sensitive property values. When a flow was triggered, the flow definition configuration JSON was printed, potentially containing sensitive values in plaintext.
- Record
CVE-2020-9486- CVSS 3.1
- 7.5 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N - Updated
- 2026-11-02
OSVGHSA-g644-pr5v-vppf
Insertion of Sensitive Information into Log File in Apache NiFi Stateless
In Apache NiFi 1.10.0 to 1.11.4, the NiFi stateless execution engine produced log output which included sensitive property values. When a flow was triggered, the flow definition configuration JSON was printed, potentially containing sensitive values in plaintext.
- Record
GHSA-g644-pr5v-vppf- CVSS 3.1
- 7.5 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N - Weakness
- CWE-532
- Updated
- 2026-11-02
OSVBIT-nifi-2020-9486 No score
In Apache NiFi 1.10.0 to 1.11.4, the NiFi stateless execution engine produced log output which included sensitive property values. When a flow was triggered, the flow definition configuration JSON was printed, potentially containing sensitive values in plaintext.
- Record
BIT-nifi-2020-9486- Updated
- 2026-11-02
Affected products
Affected packages
| Package | Affected | Fixed |
|---|---|---|
org.apache.nifi:nifi-statelessMaven |
1.10.0 to 1.11.4 | 1.12.0-RC1 |
nifiBitnami |
1.0.0 to 1.11.4 | None known |
org.apache.nifi:nifi-statelessMaven |
1.10.0 up to 1.12.0-RC1, plus listed versions 1.11.01.11.11.11.21.11.31.11.4 |
1.12.0-RC1 |
History
| Recorded | Changed | Sources |
|---|---|---|
| aliases, products | EUVD | |
| first indexed | CVE List, GitHub Advisories, NVD, OSV |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2020-9486 is a high vulnerability (CVSS 7.5) in Apache Nifi, published October 1, 2020. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 3.56%, the 89th percentile. Fixed in org.apache.nifi:nifi-stateless 1.12.0-RC1.