HIGH
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
Published Oct 1, 2020
7.5
HIGHCVSS 3.1
EPSS 2.87%
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.
Affected products
- Vendor n/a Product Apache NiFi Defaultn/a
- Version Apache NiFi 1.2.0 to 1.11.4StatusaffectedConstraints-
- Version
Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).
| Vendor | Product | Default status | Versions | ||||||
|---|---|---|---|---|---|---|---|---|---|
| n/a | Apache NiFi | n/a |
|
No data.
No Red Hat product state for this CVE.
No package ranges for this CVE.
Remediation
No remediation recorded yet.
Metrics
No CVSS v4.0 score for this CVE.
7.5 HIGH NVD
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Attack Vector Network
Attack Complexity Low
Privileges Required None
User Interaction None
Scope Unchanged
Confidentiality Impact High
Integrity Impact None
Availability Impact None
No CVSS v3.0 score for this CVE.
5.0 MEDIUM NVD
AV:N/AC:L/Au:N/C:P/I:N/A:N
Access Vector Network
Access Complexity Low
Authentication None
Confidentiality Impact Partial
Integrity Impact None
Availability Impact None
This CVE is not in the KEV list.
No CISA SSVC assessment for this CVE yet.
2.87% 0.02871
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 3, 2026.
EPSS probability 0.02871
Score over time
2021–2026- EPSS v1
- EPSS v5
- EPSS v2
- EPSS v3
- EPSS v4
Percentile over time
- EPSS v1
- EPSS v5
- EPSS v2
- EPSS v3
- EPSS v4
Table of values (43 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 3, 2026 | 2.87% (0.02871) | 86.34th | v5 (v2026.06.15) |
| Jun 15, 2026 | 2.84% (0.02837) | 84.76th | v5 (v2026.06.15) |
| Feb 11, 2026 | 1.32% (0.01320) | 79.54th | v4 (v2025.03.14) |
| Feb 4, 2026 | 2.83% (0.02825) | 85.81th | v4 (v2025.03.14) |
| Feb 1, 2026 | 0.89% (0.00891) | 75.22th | v4 (v2025.03.14) |
| Jan 4, 2026 | 2.83% (0.02825) | 85.75th | v4 (v2025.03.14) |
| Jan 1, 2026 | 0.89% (0.00891) | 75.15th | v4 (v2025.03.14) |
| Dec 4, 2025 | 2.83% (0.02825) | 85.69th | v4 (v2025.03.14) |
| Dec 1, 2025 | 0.89% (0.00891) | 74.94th | v4 (v2025.03.14) |
| Nov 21, 2025 | 2.83% (0.02825) | 85.67th | v4 (v2025.03.14) |
| Nov 18, 2025 | 1.32% (0.01320) | 78.16th | v4 (v2025.03.14) |
| Nov 4, 2025 | 2.83% (0.02825) | 85.64th | v4 (v2025.03.14) |
| Nov 1, 2025 | 0.89% (0.00891) | 74.96th | v4 (v2025.03.14) |
| Oct 4, 2025 | 2.83% (0.02825) | 85.63th | v4 (v2025.03.14) |
| Oct 1, 2025 | 0.89% (0.00891) | 74.86th | v4 (v2025.03.14) |
| Sep 4, 2025 | 2.83% (0.02825) | 85.64th | v4 (v2025.03.14) |
| Sep 1, 2025 | 0.89% (0.00891) | 74.76th | v4 (v2025.03.14) |
| Aug 4, 2025 | 2.83% (0.02825) | 85.62th | v4 (v2025.03.14) |
| Aug 1, 2025 | 0.89% (0.00891) | 74.72th | v4 (v2025.03.14) |
| Jul 6, 2025 | 2.83% (0.02825) | 85.54th | v4 (v2025.03.14) |
| Jul 1, 2025 | 0.89% (0.00891) | 74.63th | v4 (v2025.03.14) |
| Jun 4, 2025 | 2.83% (0.02825) | 85.48th | v4 (v2025.03.14) |
| Jun 1, 2025 | 0.89% (0.00891) | 74.51th | v4 (v2025.03.14) |
| May 14, 2025 | 2.83% (0.02825) | 85.43th | v4 (v2025.03.14) |
| May 13, 2025 | 0.89% (0.00891) | 74.32th | v4 (v2025.03.14) |
| May 12, 2025 | 2.83% (0.02825) | 85.39th | v4 (v2025.03.14) |
| May 9, 2025 | 0.89% (0.00891) | 74.32th | v4 (v2025.03.14) |
| May 4, 2025 | 2.83% (0.02825) | 85.39th | v4 (v2025.03.14) |
| May 1, 2025 | 0.89% (0.00891) | 74.39th | v4 (v2025.03.14) |
| Apr 11, 2025 | 2.83% (0.02825) | 84.99th | v4 (v2025.03.14) |
| Apr 10, 2025 | 0.89% (0.00891) | 73.56th | v4 (v2025.03.14) |
| Mar 18, 2025 | 2.79% (0.02793) | 85.18th | v4 (v2025.03.14) |
| Mar 17, 2025 | 0.88% (0.00881) | 73.75th | v4 (v2025.03.14) |
| Dec 12, 2024 | 0.25% (0.00248) | 65.32th | v3 (v2023.03.01) |
| Sep 3, 2023 | 0.18% (0.00180) | 54.53th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.15% (0.00154) | 49.77th | v3 (v2023.03.01) |
| Mar 6, 2023 | 0.95% (0.00954) | 36.37th | v2 (v2022.01.01) |
| Apr 1, 2022 | 0.95% (0.00954) | 32.50th | v2 (v2022.01.01) |
| Feb 4, 2022 | 12.49% (0.12492) | 89.83th | v2 (v2022.01.01) |
| Feb 3, 2022 | 10.18% (0.10179) | 87.37th | v1 |
| Jan 6, 2022 | 10.18% (0.10179) | 87.22th | v1 |
| Jan 5, 2022 | 2.46% (0.02463) | 79.15th | v5 (v2026.06.15) |
| Apr 14, 2021 | 2.46% (0.02463) | 0.00th | v1 |
Weaknesses (1)
References (8)
- https://github.com/advisories/GHSA-rfmp-jvr7-hx78 Advisory
- https://github.com/apache/nifi/commit/441781cec50f77d9f1e65093f55bbd614b8c5ec6
- https://lists.apache.org/thread.html/r2d9c21f9ec35d66f2bb42f8abe876dabd786166b6284e9a33582c718%40%3Ccommits.nifi.apache.org%3E mailing-listx_refsource_MLIST
- https://lists.apache.org/thread.html/r2d9c21f9ec35d66f2bb42f8abe876dabd786166b6284e9a33582c718@%3Ccommits.nifi.apache.org%3E
- https://lists.apache.org/thread.html/re48582efe2ac973f8cff55c8b346825cb491c71935e15ab2d61ef3bf%40%3Ccommits.nifi.apache.org%3E mailing-listx_refsource_MLIST
- https://lists.apache.org/thread.html/re48582efe2ac973f8cff55c8b346825cb491c71935e15ab2d61ef3bf@%3Ccommits.nifi.apache.org%3E
- https://nifi.apache.org/security#CVE-2020-9491 x_refsource_MISCVendor Advisory
- https://nvd.nist.gov/vuln/detail/CVE-2020-9491
Change history (0)
No recorded changes yet.
Sources
CVE.org / MITRE
Status PUBLISHED
Assigner apache
Published Oct 1, 2020
Updated Aug 4, 2024
Reserved Mar 1, 2020
Link CVE-2020-9491
CISA Vulnrichment
GHSA-RFMP-JVR7-HX78 Updated n/a