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OpenAdvisories
High · 7.5 CVE-2026-41084 BIT-airflow-2026-41084EUVD-2026-33592GHSA-mxq5-f9c5-w4p5PYSEC-2026-183

Apache Airflow: API authorization bypass: bulk TaskInstances allows cross-DAG mutation

Published Jun 1, 2026 · Updated Nov 3, 2026 · Assigned by apache

Description

A bug in Apache Airflow's bulk Task Instances API (`PATCH/DELETE /api/v2/dags/{dag_id}/dagRuns/{dag_run_id}/taskInstances`) evaluated authorization against the `dag_id` resolved from the URL path while operating on the `dag_id` / `dag_run_id` extracted from request-body entity fields. An authenticated UI/API user with edit permission on one Dag could mutate Task Instance state in any other Dag by keeping the authorized Dag's ID in the URL path and naming the target Dag's IDs in the request body entities. Affects deployments that rely on per-Dag edit-scope to keep Task Instance state isolated between teams. Users are advised to upgrade to `apache-airflow` 3.2.2 or later.

Affected products

VendorProductAffectedFixed
Apache Software Foundation Apache Airflow 3.2.0 – < 3.2.2 3.2.2

Affected packages

EcosystemPackageAffectedFixedRecord
PyPI apache-airflow >= 3.2.0, < 3.2.2 3.2.2 GHSA-mxq5-f9c5-w4p5

Advisories 1

References