CVE-2026-86792: Apache Airflow Apache Kafka provider versions 1.15.0 before 2.0.0 resolve dotted-path strings found in a Kafka connection's `extra` field into Python callables…

PriorityP264high8.8CVSS 3.1

AVNACLPRLUINSUCHIHAH

EPSS

1.19%

66.7th percentile

Apache Airflow Apache Kafka provider versions 1.15.0 before 2.0.0 resolve dotted-path strings found in a Kafka connection's `extra` field into Python callables via `import_string`, with no allowlist, and hand them to the confluent-kafka client which invokes them. Deployments that have enabled the Kafka event producer — `dag_run_events_enabled` or `task_instance_events_enabled`, both disabled by default — build that client inside the scheduler process, so a user whose only privilege is editing Airflow connections gains arbitrary code execution in the control plane; the Airflow security model limits connection-configuration users to code execution on workers, not the scheduler. Deployments using Google Managed Kafka are not affected, because that code path overwrites any user-supplied `oauth_cb`; plain brokers and Amazon MSK are exposed. Users are recommended to upgrade to apache-airflow-providers-apache-kafka 2.0.0 or later, which adds an allowlist configuration option for connection-string callbacks.

Affected

2 ranges

Vendor	Product	Version range	Fixed in
apache	apache-airflow-providers-apache-kafka	>= 1.15.0 < 2.0.0	2.0.0
apache_software_foundation	apache_airflow_apache_kafka_provider	>= 1.15.0 < 2.0.0	2.0.0

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