Vulnerability Description
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.
CVSS Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Apache | Apache-Airflow-Providers-Apache-Kafka | >= 1.15.0, < 2.0.0 |
Related Weaknesses (CWE)
References
- https://github.com/apache/airflow/pull/72208PatchVendor Advisory
- https://lists.apache.org/thread/jl4gpok02313yh3rvtvj8qbo11c6zpr2Mailing ListVendor Advisory
- https://lists.apache.org/thread/[email protected]Mailing ListVendor Advisory
- http://www.openwall.com/lists/oss-security/2026/09/15/15Mailing ListVendor Advisory
FAQ
What is CVE-2026-86792?
CVE-2026-86792 is a vulnerability with a CVSS score of 8.8 (HIGH). 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, ...
How severe is CVE-2026-86792?
CVE-2026-86792 has been rated HIGH with a CVSS base score of 8.8/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-86792?
Check the references section above for vendor advisories and patch information. Affected products include: Apache Apache-Airflow-Providers-Apache-Kafka.