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

Status: published. Published: 2026-07-07. Updated: 2026-11-03.

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.

## Remediation

- fix: The reporting source identifies this reference as a patch. Check the advisory for affected versions and supported release branches. (source: CNA: apache) — https://github.com/apache/airflow/pull/67662

## Affected products and versions

- Apache Software Foundation / Apache Airflow (apache-airflow-core): ≥ 3.0.0; < 3.3.0 (affected, semver). Source: CNA: apache

## Severity and prioritization

- CVSS 3.1: 6.5 (medium); CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N; source: ADP: CISA-ADP

- CISA KEV: No listing in collected sources

- EPSS: 0.60% as of 2026-11-02; percentile 48.74%

- SSVC: exploitation none; automatable no; technical impact partial; source ADP: CISA-ADP

- Weaknesses: CWE-639

## Exploit evidence

No exploit evidence in collected sources. This is not proof of no exploitation.

## References

- https://github.com/apache/airflow/pull/67662 (CNA: apache; patch)

- https://lists.apache.org/thread/qqv41t3oydkn9o14r2rfz1wkdrsp5jzn (CNA: apache; vendor-advisory)

- http://www.openwall.com/lists/oss-security/2026/07/07/5 (ADP: CVE)

## Provenance

- CNA: apache: https://www.cve.org/CVERecord?id=CVE-2026-49296; retrieved 2026-11-03; source updated 2026-11-03

- FIRST EPSS: https://api.first.org/data/v1/epss?cve=CVE-2026-49296; retrieved 2026-11-03; source updated Not reported

Revision: 641948d896015190dbeea2a03d8a44a49015dfc1f56e6b898c6f9779105336ed

Canonical: https://y2.dev/cve/CVE-2026-49296

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