Auth bypass in Apache Airflow
CVE-2026-49296
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.
Vulnerability class: IDOR (Insecure Direct Object Reference)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N.
EPSS exploit prediction
EPSS: 0.006 (47.1th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 47th percentile — 47.1% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.004 · newest: 0.006 · change: +0.002
Affected products
- Apache Airflow
- Apache Software Foundation Airflow — versions 3.0.0
Weakness classification (CWE)
References
- github.com/apache/airflow/pull/67662 (Patch, patch, Issue Tracking)
- lists.apache.org/thread/qqv41t3oydkn9o14r2rfz1wkdrsp5jzn (vendor-advisory, Mailing List, Vendor Advisory)
- af854a3a-2127-422b-91ae-364da2661108 (Mailing List, Third Party Advisory)
Frequently asked questions
- What is CVE-2026-49296?
- CVE-2026-49296 is a medium-severity vulnerability in Apache Airflow, classified under Authorization Bypass Through User-Controlled Key. CVSS score: 6.5/10. Published 2026-07-07.
- How severe is CVE-2026-49296?
- Medium severity. CVSS v3 base score is 6.5 out of 10.