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
Published · last modified .
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.
EPSS exploit prediction
EPSS: 0.046 (91.3th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 91st percentile — 91.3% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.046 · newest: 0.046 · change: 0.000
Affected products
- Apache Airflow — versions 2.0.0
- Apache Software Foundation Airflow — versions Apache Airflow 2.0.0
Weakness classification (CWE)
References
- lists.apache.org/thread.html/re21fec81baea7a6d73b0b5d31efd07cc02c61f832e297f65b… (Mailing List, Third Party Advisory)
- www.openwall.com/lists/oss-security/2021/02/17/2 (mailing-list, Mailing List, Third Party Advisory)
- lists.apache.org/thread.html/re21fec81baea7a6d73b0b5d31efd07cc02c61f832e297f65b… (mailing-list)
- lists.apache.org/thread.html/r36111262a59219a3e2704c71e97cf84937dae5ba7a1da9949… (mailing-list)
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.