CVE-2021-26697
MEDIUM5.3EPSS 2.5%Apache Airflow: Lineage API endpoint for Experimental API missed authentication check
Published: 6/18/2021Modified: 5/20/2025
Description
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.
Affected packages (3)
- Bitnami/airflow>= 2.0.0, < 2.0.1
- PyPI/apache-airflow>= 2.0.0, < 2.0.1rc1
- PyPI/apache-airflowfrom 0, < 2.0.1
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 4.0 | — | CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N |
| osv | CVSS 3.1 | MEDIUM5.3 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N |
References (14)
- ADVISORYhttps://github.com/advisories/GHSA-fh37-cx83-q542
- ADVISORYhttps://nvd.nist.gov/vuln/detail/CVE-2021-26697
- PATCHhttps://github.com/apache/airflow
- WEBhttps://github.com/apache/airflow/commit/21cedff205e7d62675949fda2aa4616d77232b76
- WEBhttps://github.com/apache/airflow/commit/24a54242d56058846c7978130b3f37ca045d5142
- WEBhttps://github.com/apache/airflow/commit/93957e917ff4cfb0be11aef088bd9527cf728a04
- WEBhttps://github.com/pypa/advisory-database/tree/main/vulns/apache-airflow/PYSEC-2021-3.yaml
- WEBhttps://lists.apache.org/thread.html/r36111262a59219a3e2704c71e97cf84937dae5ba7a1da99499e5d8f9@%3Cannounce.apache.org%3E
- WEBhttps://lists.apache.org/thread.html/r36111262a59219a3e2704c71e97cf84937dae5ba7a1da99499e5d8f9%40%3Cannounce.apache.org%3E
- WEBhttps://lists.apache.org/thread.html/re21fec81baea7a6d73b0b5d31efd07cc02c61f832e297f65bb19b519@%3Cdev.airflow.apache.org%3E
- WEBhttps://lists.apache.org/thread.html/re21fec81baea7a6d73b0b5d31efd07cc02c61f832e297f65bb19b519@%3Cusers.airflow.apache.org%3E
- WEBhttps://lists.apache.org/thread.html/re21fec81baea7a6d73b0b5d31efd07cc02c61f832e297f65bb19b519%40%3Cdev.airflow.apache.org%3E
- WEBhttps://lists.apache.org/thread.html/re21fec81baea7a6d73b0b5d31efd07cc02c61f832e297f65bb19b519%40%3Cusers.airflow.apache.org%3E
- WEBhttp://www.openwall.com/lists/oss-security/2021/02/17/2