GitHub Advisoryadvisory · PyPI

GHSA-hhx9-p69v-cx2j Authentication bypass in Apache Airflow

CRITICAL Published 2021-04-30 Modified 2025-10-22 Official page ↗
Aliases
CVE-2020-13927
Ecosystem
PyPI
Packages
apache-airflow
Severity
Critical
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:H
Weaknesses
CWE-1056, CWE-1188, CWE-287, CWE-306
Reviewed
2021-04-20

Affected packages

• PyPI apache-airflow: < 1.10.11 → fixed in 1.10.11

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

Related

Alias · CVE (1)

  • CVE-2020-13927 The previous default setting for Airflow's Experimental API was to allow all API requests without authentication, but this poses security… vulnerability

Weakness · CWE (4)

  • CWE-1056 Invokable Control Element with Variadic Parameters weakness
  • CWE-1188 Initialization of a Resource with an Insecure Default weakness
  • CWE-287 Improper Authentication weakness
  • CWE-306 Missing Authentication for Critical Functionality weakness

References