apache-airflow DAG source authorization bypass exposes co-located DAG source

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.

CVSS 3.1

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

Severity from

GitHub (reviewed advisory)

Weakness

CWE-639

Also known as

BIT-airflow-2026-49296, CVE-2026-49296, PYSEC-2026-2083

• nvd.nist.gov/vuln/detail/CVE-2026-49296
• github.com/apache/airflow/pull/67662
• github.com/apache/airflow/commit/992e602015b5e9a3fd297e18047cff9d85094c95
• github.com/apache/airflow
• github.com/apache/airflow/releases/tag/3.3.0
• github.com/pypa/advisory-database/tree/main/vulns/apache-airflow/PYSEC-2026-2083.yaml
• lists.apache.org/thread/qqv41t3oydkn9o14r2rfz1wkdrsp5jzn
• www.openwall.com/lists/oss-security/2026/07/07/5