CVE-2023-42663: Apache Airflow: Bypass permission verification to view task instances of other dags

Severity: medium (CVSS 6.5 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 2.0% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2023-10-14 · updated 2026-06-17
Weakness: CWE-200

Description

Apache Airflow, versions before 2.7.2, has a vulnerability that allows an authorized user who has access to read specific DAGs only, to read information about task instances in other DAGs. Users of Apache Airflow are advised to upgrade to version 2.7.2 or newer to mitigate the risk associated with this vulnerability.

Affected products

Apache Airflow: before 2.7.2 — fixed in 2.7.2

How to fix

Upgrade to a fixed version: Apache Airflow 2.7.2. Check the vendor advisory for mitigations.

References

http://www.openwall.com/lists/oss-security/2023/11/12/2
https://github.com/apache/airflow/pull/34315
https://lists.apache.org/thread/xj86cvfkxgd0cyqfmz6mh1bsfc61c6o9
http://www.openwall.com/lists/oss-security/2023/11/12/2
https://github.com/apache/airflow/pull/34315
https://lists.apache.org/thread/xj86cvfkxgd0cyqfmz6mh1bsfc61c6o9

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