Information disclosure in Apache Airflow
CVE-2026-49487
In Apache Airflow before 3.3.0, the REST API task-instance detail and list endpoints returned a deferred task's trigger kwargs without masking. When a deferred operator passed a secret (for example a provider API key) into its trigger, any authenticated user with DAG-scoped task-instance read access for that DAG could read that secret in clear text while the task was deferred. Users should upgrade to apache-airflow 3.3.0 or later, which masks sensitive values in trigger kwargs returned by the API.
Vulnerability class: Information Disclosure
Published · last modified .
CVSS v3 metric
CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N.
EPSS exploit prediction
EPSS: 0.007 (50.1th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 50th percentile — 50.1% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.007 · newest: 0.007 · change: 0.000
Affected products
- Apache Airflow
- Apache Software Foundation Airflow — versions 0
Weakness classification (CWE)
References
- github.com/apache/airflow/pull/67868 (patch, Issue Tracking)
- lists.apache.org/thread/qlw6pozlzlfhkvmbgqsbjlq6vj4v0pc4 (vendor-advisory, Vendor Advisory)
- af854a3a-2127-422b-91ae-364da2661108 (Third Party Advisory)
Frequently asked questions
- What is CVE-2026-49487?
- CVE-2026-49487 is a medium-severity vulnerability in Apache Airflow, classified under Information Disclosure. CVSS score: 6.5/10. Published 2026-07-07.
- How severe is CVE-2026-49487?
- Medium severity. CVSS v3 base score is 6.5 out of 10.