CVE-2026-49296Apache Airflow: Per-DAG read bypass discloses co-located DAGs' source via GET /api/v2/dagSources/{dag_id}

Description

Before apache-airflow 3.3.0, a user authorized to read one Dag could disclose the source of other Dags co-located in the same source file. `GET /api/v2/dagSources/{dag_id}` — and the equivalent Dag-source view in the UI — returned the entire source file without redacting Dags the caller was not authorized to read, bypassing per-DAG read authorization. Deployments that co-locate multiple Dags in a single file and rely on per-DAG access control to limit source visibility are affected; single-Dag-per-file deployments are not. Upgrade to apache-airflow 3.3.0 or later.

Data: CVE.org, NVD, CISA KEV, FIRST EPSS, Ubuntu. Published as the sources state it, in English.

Affected products and versions

References and patches

• https://github.com/apache/airflow/pull/67662 patchIssue TrackingPatch
• https://lists.apache.org/thread/qqv41t3oydkn9o14r2rfz1wkdrsp5jzn vendor-advisoryMailing ListVendor Advisory
• http://www.openwall.com/lists/oss-security/2026/07/07/5 Mailing ListThird Party Advisory