If remote logging is not used, the worker (in the case of CeleryExecutor) or the scheduler (in the case of LocalExecutor) runs a Flask logging server and is listening on a specific port and also binds on 0.0.0.0 by default. This logging server had no authentication and allows reading log files of DAG jobs. This issue affects Apache Airflow < 2.1.2.
Advisories
Source ID Title
EUVD EUVD EUVD-2021-0013 If remote logging is not used, the worker (in the case of CeleryExecutor) or the scheduler (in the case of LocalExecutor) runs a Flask logging server and is listening on a specific port and also binds on 0.0.0.0 by default. This logging server had no authentication and allows reading log files of DAG jobs. This issue affects Apache Airflow < 2.1.2.
Github GHSA Github GHSA GHSA-m6h2-jx9v-58w6 Missing Authorization in Apache Airflow
Fixes

Solution

No solution given by the vendor.


Workaround

Use remote logging with GCS, S3, Elasticsearch etc. This is recommended for production environments. And do not publicly expose any other ports apart from Webserver port, Flower port etc.

History

Tue, 15 Jul 2025 13:45:00 +0000

Type Values Removed Values Added
Metrics epss

{'score': 0.00116}

epss

{'score': 0.00113}


cve-icon MITRE

Status: PUBLISHED

Assigner: apache

Published:

Updated: 2024-08-04T00:40:47.453Z

Reserved: 2021-06-29T00:00:00

Link: CVE-2021-35936

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Modified

Published: 2021-08-16T08:15:11.530

Modified: 2024-11-21T06:12:47.057

Link: CVE-2021-35936

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

No data.