Auth bypass in Apache Airflow
CVE-2021-26697
The lineage endpoint of the deprecated Experimental API was not protected by authentication in Airflow 2.0.0. This allowed unauthenticated users to hit that endpoint. This is low-severity issue as the attacker needs to be aware of certain parameters to pass to that endpoint and even after can just get some metadata about a DAG and a Task. This issue affects Apache Airflow 2.0.0.
Vulnerability class: Privilege Escalation
EPSS: 0.046 (90.6th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 5.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N.
Affected products
- Apache Airflow — versions 2.0.0
- Apache Software Foundation Airflow — versions Apache Airflow 2.0.0
Weakness classification (CWE)
References
- security@apache.org (Mailing List, Third Party Advisory, x_refsource_MISC)
- security@apache.org (mailing-list, x_refsource_MLIST, Mailing List, Third Party Advisory)
- security@apache.org (mailing-list, x_refsource_MLIST)
- security@apache.org (mailing-list, x_refsource_MLIST)
Frequently asked questions
- What is CVE-2021-26697?
- CVE-2021-26697 is a medium-severity vulnerability in Apache Airflow, classified under Improper Privilege Management. CVSS score: 5.3/10. Published 2021-02-17.
- How severe is CVE-2021-26697?
- Medium severity. CVSS v3 base score is 5.3 out of 10.