What is CVE-2026-26929?

CVE-2026-26929 is a medium-severity vulnerability in Apache Airflow, classified under Incorrect Permission Assignment for Critical Resource. CVSS score: 6.5/10. Published 2026-03-17.

How severe is CVE-2026-26929?

Medium severity. CVSS v3 base score is 6.5 out of 10.

Vulnerability in Apache Airflow

CVE-2026-26929

Apache Airflow versions 3.0.0 through 3.1.7 FastAPI DagVersion listing API does not apply per-DAG authorization filtering when the request is made with dag_id set to "~" (wildcard for all DAGs). As a result, version metadata of DAGs that the requester is not authorized to access is returned. Users are recommended to upgrade to Apache Airflow 3.1.8 or later, which resolves this issue.

Published 2026-03-17 · last modified 2026-06-17.

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 (47.7th percentile), scored 2026-10-01.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 48th percentile — 47.7% 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)

CWE-732 — Incorrect Permission Assignment for Critical Resource

References

github.com/apache/airflow/pull/61675 (patch, Issue Tracking)
lists.apache.org/thread/g5o6khx83jwqvdyn0mlyb0krt35cs9ss (vendor-advisory, Mailing List, Third Party Advisory)
af854a3a-2127-422b-91ae-364da2661108 (Mailing List, Third Party Advisory)

Frequently asked questions

What is CVE-2026-26929?: CVE-2026-26929 is a medium-severity vulnerability in Apache Airflow, classified under Incorrect Permission Assignment for Critical Resource. CVSS score: 6.5/10. Published 2026-03-17.
How severe is CVE-2026-26929?: Medium severity. CVSS v3 base score is 6.5 out of 10.