Exposure of Resource to Wrong Sphere Affecting airflow-3-advanced-compat package, versions <3.2.0-r0
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applications- Snyk IDSNYK-MINIMOSLATEST-AIRFLOW3ADVANCEDCOMPAT-16035629
- published14 Apr 2026
- disclosed9 Apr 2026
Introduced: 9 Apr 2026
NewCVE-2026-34538 (opens in a new tab)How to fix?
Upgrade Minimos:latest airflow-3-advanced-compat to version 3.2.0-r0 or higher.
NVD Description
Note: Versions mentioned in the description apply only to the upstream airflow-3-advanced-compat package and not the airflow-3-advanced-compat package as distributed by Minimos.
See How to fix? for Minimos:latest relevant fixed versions and status.
Apache Airflow versions 3.0.0 through 3.1.8 DagRun wait endpoint returns XCom result values even to users who only have DAG Run read permissions, such as the Viewer role.This behavior conflicts with the FAB RBAC model, which treats XCom as a separate protected resource, and with the security model documentation that defines the Viewer role as read-only.
Airflow uses the FAB Auth Manager to manage access control on a per-resource basis. The Viewer role is intended to be read-only by default, and the security model documentation defines Viewer users as those who can inspect DAGs without accessing sensitive execution results.
Users are recommended to upgrade to Apache Airflow 3.2.0 which resolves this issue.
References
- https://www.cve.org/CVERecord?id=CVE-2026-34538
- https://github.com/advisories/GHSA-r7vr-m4jw-r794
- https://osv.dev/vulnerability/MINI-xhj8-q7cf-g9pr
- https://osv.dev/vulnerability/CVE-2026-34538
- https://github.com/apache/airflow/pull/64415
- https://lists.apache.org/thread/9mq3msqhmgjwdzbr6bgthj4brb3oz9fl
- http://www.openwall.com/lists/oss-security/2026/04/09/9