CVE-2026-75157: Apache Airflow: Asset queued-events DELETE endpoints gated on Dag READ instead of Dag EDIT (asset-triggered scheduling suppression)

[Rahul Vats <rahulvats () apache org>]

Severity: low 

Affected versions:

- Apache Airflow before 3.3.2

Description:

Apache Airflow's asset queued-events DELETE endpoints checked the caller's Dag-axis permission with `READ` instead of 
`EDIT`. Any authenticated user who could read a Dag could therefore delete that Dag's queued asset events, silently 
suppressing asset-triggered scheduling for it — a state-changing action gated on a read-only permission. Deployments 
are affected whenever asset-triggered scheduling is in use and Dag read access is granted more widely than Dag edit 
access, which is the normal RBAC arrangement; no special configuration is required. Upgrade to apache-airflow 3.3.2 or 
later.

Credit:

n0mi1k (finder)
Jarek Potiuk (remediation developer)

References:

https://github.com/apache/airflow/pull/71736
https://airflow.apache.org/
https://www.cve.org/CVERecord?id=CVE-2026-75157