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Message-ID: <1e33ee0f-401a-97d9-5fd8-d93ea0998ec7@apache.org>
Date: Sun, 31 May 2026 12:18:33 +0000
From: Rahul Vats <rahulvats@...che.org>
To: oss-security@...ts.openwall.com
Subject: CVE-2026-49298: Apache Airflow: JWT Token Exposure in
KubernetesExecutor Command-Line Arguments
Severity: Moderate
Affected versions:
- Apache Airflow (apache-airflow) before 3.2.2
Description:
A bug in Apache Airflow's KubernetesExecutor caused JWT tokens used by worker pods to authenticate against the Execution API to be passed to the worker container as command-line arguments visible in the pod spec. An authenticated UI/API user with Kubernetes read-only access to the cluster (e.g. `pods/get` in the Airflow namespace) could harvest the JWT from `kubectl describe pod` output and then call state-mutating Execution API endpoints — triggering Dag runs, clearing runs, reading or writing Variables / Connections / XComs — as if they were a running task. Affects deployments using the `KubernetesExecutor`. Users are advised to upgrade to `apache-airflow` 3.2.2 or later. This is the airflow-core half of the same vulnerability addressed by [CVE-2026-27173](https://www.cve.org/CVERecord?id=CVE-2026-27173), which shipped the apache-airflow-providers-cncf-kubernetes side of the fix. Deployments that already upgraded `apache-airflow-providers-cncf-kubernetes` to 10.17.0 or later per the CVE-2026-27173 advisory should additionally upgrade `apache-airflow` to 3.2.2 or later to close the core-side surface — the two fixes are complementary, not duplicates.
Credit:
Nikolai Dvoinishnikov (nikdvy@...il.com) (finder)
Anton Kuznetsov (piratusxp@...il.com) (finder)
Anish Giri (remediation developer)
References:
https://github.com/apache/airflow/pull/60108
https://airflow.apache.org/
https://www.cve.org/CVERecord?id=CVE-2026-49298
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