CVE-2026-49296

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.

PUBLISHED Reserved 2026-05-28 | Published 2026-07-07 | Updated 2026-07-07 | Assigner apache

Problem types

CWE-639: Authorization Bypass Through User-Controlled Key

Product status

Credits

Matteo Panzeri (Università di Pavia), GitHub @matte1782 finder

Jarek Potiuk remediation developer

References

www.openwall.com/lists/oss-security/2026/07/07/5

github.com/apache/airflow/pull/67662 patch

lists.apache.org/thread/qqv41t3oydkn9o14r2rfz1wkdrsp5jzn vendor-advisory

cve.org (CVE-2026-49296)

nvd.nist.gov (CVE-2026-49296)

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