CVE-2021-35936
Description
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.
Predictions
Heuristic predictions, AS-IS, for prioritization only.
Mitigations
No mitigations published for this CVE yet.
The vendor-content worker queues fetches as references arrive (check back in a few minutes). Or — if you've already worked around this in production — publish your fix to the community-verified tier.
✚ Propose a mitigation on Community → Mitigations published via the community go through AI scoring + 2 human reviewers + 7-day silent objection window before landing here withsource_tier=community-verified.
Package impact
| Ecosystem | Package | Vulnerable | Fixed |
|---|---|---|---|
| PyPI | apache-airflow | <2.1.2 | 2.1.2 |
References
- https://nvd.nist.gov/vuln/detail/CVE-2021-35936
- https://github.com/apache/airflow/commit/27265516d2b897585f5019ecd820cfe5471fd351
- https://github.com/apache/airflow/commit/7a5bb88ad78d600fbb1676a55752597928115bd8
- https://github.com/apache/airflow/commit/d772f38f843b9add5319a01cf51a844145b01f63
- https://github.com/advisories/GHSA-m6h2-jx9v-58w6
- https://github.com/apache/airflow
- https://github.com/apache/airflow/compare/2.1.1...2.1.2
- https://github.com/pypa/advisory-database/tree/main/vulns/apache-airflow/PYSEC-2021-122.yaml
- https://lists.apache.org/thread.html/r53d6bd7b0a66f92ddaf1313282f10fec802e71246606dd30c16536df%40%3Cusers.airflow.apache.org%3E
Community-verified mitigations for this CVE will appear above when contributors publish them.
Verify integrity in audit chain (admin only). AS-IS.