Vulnerability in Apache Apache-Airflow-Providers-Apache-Kafka
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 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.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.012 (67.9th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 68th percentile — 67.9% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.012 · newest: 0.012 · change: 0.000
Affected products
Weakness classification (CWE)
References
- github.com/apache/airflow/pull/72208 (Patch, patch, Vendor Advisory)
- lists.apache.org/thread/jl4gpok02313yh3rvtvj8qbo11c6zpr2 (vendor-advisory, Mailing List, Vendor Advisory)
- af854a3a-2127-422b-91ae-364da2661108 (Mailing List, Vendor Advisory)
- lists.apache.org/thread/jl4gpok02313yh3rvtvj8qbo11c6zpr2 (vendor-advisory, Mailing List, Vendor Advisory)
Frequently asked questions
- What is CVE-2026-86792?
- CVE-2026-86792 is a high-severity vulnerability in Apache Apache-Airflow-Providers-Apache-Kafka, classified under Use of Externally-Controlled Input to Select Classes or Code (Unsafe Reflection). CVSS score: 8.8/10. Published 2026-09-16.
- How severe is CVE-2026-86792?
- High severity. CVSS v3 base score is 8.8 out of 10.