CVE-2021-26559
Description
Improper Access Control on Configurations Endpoint for the Stable API of Apache Airflow allows users with Viewer or User role to get Airflow Configurations including sensitive information even when `[webserver] expose_config` is set to `False` in `airflow.cfg`. This allowed a privilege escalation attack. This issue affects Apache Airflow 2.0.0.
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 | >=2.0.0,<2.0.1rc1 | 2.0.1rc1 |
| PyPI | apache-airflow | <2.0.1 | 2.0.1 |
References
- https://nvd.nist.gov/vuln/detail/CVE-2021-26559
- https://github.com/apache/airflow/commit/3909232fafd09ac72b49010ecdfd6ea48f06d5cf
- https://github.com/apache/airflow/commit/5e35926c7eda0dfa11a9623e4bf5f60c2bd6b3f6
- https://github.com/advisories/GHSA-ffw3-6mp6-jmvj
- https://github.com/apache/airflow
- https://github.com/apache/airflow/blob/486b76438c0679682cf98cb88ed39c4b161cbcc8/CHANGELOG.txt
- https://github.com/pypa/advisory-database/tree/main/vulns/apache-airflow/PYSEC-2021-2.yaml
- https://lists.apache.org/thread.html/r3b3787700279ec361308cbefb7c2cce2acb26891a12ce864e4a13c8d%40%3Cusers.airflow.apache.org%3E
- https://lists.apache.org/thread.html/rd142565996d7ee847b9c14b8a9921dcf80bc6bc160e3d9dca6dfc2f8@%3Cannounce.apache.org%3E
- http://www.openwall.com/lists/oss-security/2021/02/17/1
Community-verified mitigations for this CVE will appear above when contributors publish them.
Verify integrity in audit chain (admin only). AS-IS.