Incorrect Authorization Affecting airflow-3 package, versions <3.2.2-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-AIRFLOW3-17944822
- published11 Jul 2026
- disclosed1 Jun 2026
Introduced: 1 Jun 2026
CVE-2026-45426 (opens in a new tab)How to fix?
Upgrade Minimos:latest airflow-3 to version 3.2.2-r0 or higher.
NVD Description
Note: Versions mentioned in the description apply only to the upstream airflow-3 package and not the airflow-3 package as distributed by Minimos.
See How to fix? for Minimos:latest relevant fixed versions and status.
Exploitation requires the attacker to already be an authenticated Airflow worker holding a valid Log-server JWT issued for at least one Dag. Apache Airflow's Log server authorized JWT tokens against Dag IDs by applying Python's str.lstrip() to the requested path segment when verifying the JWT's sub claim. str.lstrip() strips any of a set of characters from the left (not a prefix), so a JWT issued for a Dag named e.g. dag_a would authorize log access to any other Dag whose name began with any subset of the characters {d, a, g, _} (e.g. dag_attacker, aaaa_target, _dag_secret). Such an authenticated worker could enumerate and read worker logs of other Dags whose names happened to share that character-class prefix, leaking task output and error traces beyond the documented per-Dag isolation boundary. Affects deployments relying on per-Dag log-access scoping (multi-team, shared-executor, shared-worker topologies). Users are advised to upgrade to apache-airflow 3.2.2 or later.
References
- https://www.cve.org/CVERecord?id=CVE-2026-45426
- https://github.com/advisories/GHSA-x5wm-j6wh-2834
- https://osv.dev/vulnerability/MINI-3397-3fr4-q47v
- https://osv.dev/vulnerability/CVE-2026-45426
- https://github.com/apache/airflow/pull/66749
- https://lists.apache.org/thread/hz1q7vg65vq2h4fobv5ww8tp257fbqj9
- http://www.openwall.com/lists/oss-security/2026/05/31/13