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URL: https://nvd.nist.gov/vuln/detail/CVE-2020-13927

⇱ NVD - CVE-2020-13927

  1. Vulnerabilities

CVE-2020-13927 Detail

Description

The previous default setting for Airflow's Experimental API was to allow all API requests without authentication, but this poses security risks to users who miss this fact. From Airflow 1.10.11 the default has been changed to deny all requests by default and is documented at https://airflow.apache.org/docs/1.10.11/security.html#api-authentication. Note this change fixes it for new installs but existing users need to change their config to default `[api]auth_backend = airflow.api.auth.backend.deny_all` as mentioned in the Updating Guide: https://github.com/apache/airflow/blob/1.10.11/UPDATING.md#experimental-api-will-deny-all-request-by-default


Metrics

 
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CVSS 4.0 Severity and Vector Strings:

NVD assessment not yet provided.

References to Advisories, Solutions, and Tools

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URL Source(s) Tag(s)
http://packetstormsecurity.com/files/162908/Apache-Airflow-1.10.10-Remote-Code-Execution.html Apache Software Foundation, CVE Exploit  Third Party Advisory  VDB Entry 
http://packetstormsecurity.com/files/174764/Apache-Airflow-1.10.10-Remote-Code-Execution.html Apache Software Foundation, CVE Exploit  Third Party Advisory  VDB Entry 
https://lists.apache.org/thread.html/r23a81b247aa346ff193670be565b2b8ea4b17ddbc7a35fc099c1aadd%40%3Cdev.airflow.apache.org%3E Apache Software Foundation, CVE Mailing List  Vendor Advisory 
https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2020-13927 CISA-ADP Third Party Advisory  US Government Resource 

This CVE is in CISA's Known Exploited Vulnerabilities Catalog

Reference CISA's BOD 22-01 and Known Exploited Vulnerabilities Catalog for further guidance and requirements.

Vulnerability Name Date Added Due Date Required Action
Apache Airflow's Experimental API Authentication Bypass 01/18/2022 07/18/2022 Apply updates per vendor instructions.

Weakness Enumeration

CWE-ID CWE Name Source
CWE-306 Missing Authentication for Critical Function 👁 cwe source acceptance level
NIST   CISA-ADP  
CWE-1188 Insecure Default Initialization of Resource 👁 cwe source acceptance level
NIST   CISA-ADP  
CWE-1056 Invokable Control Element with Variadic Parameters CISA-ADP  

Known Affected Software Configurations Switch to CPE 2.2

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Change History

17 change records found show changes

CVE Modified by CISA-ADP 6/16/2026 10:53:54 PM

Action Type Old Value New Value
Added Affected 
[{"vendor":"apache","product":"airflow","defaultStatus":"unknown","cpes":["cpe:2.3:a:apache:airflow:*:*:*:*:*:*:*:*"],"versions":[{"version":"0","lessThan":"1.10.11","versionType":"custom","status":"affected"}]}]
Added SSVC 
{"timestamp":"2024-07-24T21:03:08.842589Z","id":"CVE-2020-13927","options":[{"exploitation":"active"},{"automatable":"yes"},{"technicalImpact":"total"}],"role":"CISA Coordinator","version":"2.0.3"}

CVE Modified by Apache Software Foundation 6/16/2026 10:53:54 PM

Action Type Old Value New Value
Added Affected 
[{"vendor":"n/a","product":"Apache Airflow","versions":[{"version":"Apache Airflow <1.10.11","status":"affected"}]}]

Modified Analysis by NIST 10/23/2025 10:51:33 AM

Action Type Old Value New Value
Added Reference Type 
CISA-ADP: https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2020-13927 Types: Third Party Advisory, US Government Resource

CVE Modified by CISA-ADP 10/21/2025 8:16:57 PM

Action Type Old Value New Value
Added Reference 
https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2020-13927

CVE Modified by CISA-ADP 10/21/2025 4:17:47 PM

Action Type Old Value New Value
Removed Reference 
https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2020-13927

CVE Modified by CISA-ADP 10/21/2025 3:18:19 PM

Action Type Old Value New Value
Added Reference 
https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2020-13927

Modified Analysis by NIST 3/07/2025 11:27:46 AM

Action Type Old Value New Value

CVE Modified by CVE 11/21/2024 12:02:09 AM

Action Type Old Value New Value
Added Reference 
http://packetstormsecurity.com/files/162908/Apache-Airflow-1.10.10-Remote-Code-Execution.html
Added Reference 
http://packetstormsecurity.com/files/174764/Apache-Airflow-1.10.10-Remote-Code-Execution.html
Added Reference 
https://lists.apache.org/thread.html/r23a81b247aa346ff193670be565b2b8ea4b17ddbc7a35fc099c1aadd%40%3Cdev.airflow.apache.org%3E

Modified Analysis by NIST 8/14/2024 4:10:46 PM

Action Type Old Value New Value

CVE Modified by CISA-ADP 8/01/2024 9:42:03 AM

Action Type Old Value New Value
Added CVSS V3.1 
CISA-ADP AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Added CWE 
CISA-ADP CWE-1056
Added CWE 
CISA-ADP CWE-1188
Added CWE 
CISA-ADP CWE-306

CVE Modified by Apache Software Foundation 5/14/2024 2:25:17 AM

Action Type Old Value New Value

Modified Analysis by NIST 2/14/2024 12:16:32 PM

Action Type Old Value New Value
Added CWE 
NIST CWE-306
Changed Reference Type 
http://packetstormsecurity.com/files/174764/Apache-Airflow-1.10.10-Remote-Code-Execution.html No Types Assigned


 
http://packetstormsecurity.com/files/174764/Apache-Airflow-1.10.10-Remote-Code-Execution.html Exploit, Third Party Advisory, VDB Entry
Changed Reference Type 
https://lists.apache.org/thread.html/r23a81b247aa346ff193670be565b2b8ea4b17ddbc7a35fc099c1aadd%40%3Cdev.airflow.apache.org%3E Vendor Advisory


 
https://lists.apache.org/thread.html/r23a81b247aa346ff193670be565b2b8ea4b17ddbc7a35fc099c1aadd%40%3Cdev.airflow.apache.org%3E Mailing List, Vendor Advisory

CVE Modified by Apache Software Foundation 9/19/2023 2:15:16 PM

Action Type Old Value New Value
Added Reference 
http://packetstormsecurity.com/files/174764/Apache-Airflow-1.10.10-Remote-Code-Execution.html [No Types Assigned]

CWE Remap by NIST 7/12/2022 1:42:04 PM

Action Type Old Value New Value
Changed CWE 
NVD-CWE-Other



CWE-1188


Modified Analysis by NIST 1/01/2022 1:18:17 PM

Action Type Old Value New Value
Changed Reference Type 
http://packetstormsecurity.com/files/162908/Apache-Airflow-1.10.10-Remote-Code-Execution.html No Types Assigned


 
http://packetstormsecurity.com/files/162908/Apache-Airflow-1.10.10-Remote-Code-Execution.html Exploit, Third Party Advisory, VDB Entry

CVE Modified by Apache Software Foundation 6/02/2021 12:15:08 PM

Action Type Old Value New Value
Added Reference 
http://packetstormsecurity.com/files/162908/Apache-Airflow-1.10.10-Remote-Code-Execution.html [No Types Assigned]

Initial Analysis by NIST 11/24/2020 12:29:00 PM

Action Type Old Value New Value
Added CVSS V3.1 
NIST AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Added CVSS V2 
NIST (AV:N/AC:L/Au:N/C:P/I:P/A:P)
Added CWE 
NIST NVD-CWE-Other
Added CPE Configuration 
OR
 *cpe:2.3:a:apache:airflow:*:*:*:*:*:*:*:* versions up to (excluding) 1.10.11
Changed Reference Type 
https://lists.apache.org/thread.html/r23a81b247aa346ff193670be565b2b8ea4b17ddbc7a35fc099c1aadd%40%3Cdev.airflow.apache.org%3E No Types Assigned


 
https://lists.apache.org/thread.html/r23a81b247aa346ff193670be565b2b8ea4b17ddbc7a35fc099c1aadd%40%3Cdev.airflow.apache.org%3E Vendor Advisory

Quick Info

CVE Dictionary Entry:
CVE-2020-13927
NVD Published Date:
11/10/2020
NVD Last Modified:
06/16/2026
Source:
Apache Software Foundation