CVE-2026-48892 Apache Airflow: Config API leaks per-key secrets backend kwargs - masker bypass on synthetic options
Authenticated users can retrieve plaintext secrets-backend credentials from the Config API due to a masker bypass in Apache Airflow.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2026-48892?
CVE-2026-48892 is a medium-severity vulnerability in Apache Airflow, published on 7 Jul 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
The Config API in Apache Airflow surfaced per-key secrets-backend overrides (environment variables like `AIRFLOW__SECRETS__BACKEND_KWARG__SECRET_ID` and `AIRFLOW__WORKERS__SECRETS_BACKEND_KWARG__SECRET_ID`) as synthetic config options whose option names were not in `sensitive_config_values`, so the masker did not redact them. An authenticated UI/API user with Config read permission could retrieve plaintext secrets-backend credentials (Vault `role_id` / `secret_id`, etc.) from the Config API output. Affects deployments that configure secrets backends via per-key environment overrides. Users are advised to upgrade to `apache-airflow` 3.3.0 or later.
Weakness: CWE-200
Which versions are affected by CVE-2026-48892?
4 open source packages ship an affected version, including apache-airflow and airflow. It affects 1 product.
| Package | Affected | Fixed in |
|---|---|---|
apache-airflow PyPI | All versions | 3.3.0 |
apache-airflow PyPI | All versions | 3.3.0 |
apache-airflow PyPI | All versions | 3.3.0 |
airflow Bitnami | All versions | 3.3.0 |
Products include Apache Airflow.
How do I fix CVE-2026-48892?
Upgrade apache-airflow to 3.3.0 or later.
Is CVE-2026-48892 being exploited?
There is no known exploitation of CVE-2026-48892 in the wild and no public exploit code.
Other vulnerabilities in Apache Airflow
- CVE-2020-13927 Apache Airflow's Experimental API Authentication Bypass
- CVE-2020-11978 Apache Airflow Command Injection
- CVE-2026-33264 Apache Airflow: DAG author RCE on webserver via unrestricted import_string() in BaseSerialization.deserialize()
- CVE-2023-25754 Apache Airflow: Privilege escalation using airflow logs
- CVE-2023-22884 Apache Airflow, Apache Airflow MySQL Provider: Arbitrary file read via MySQL provider in Apache Airflow
Sources
Also known as BIT-airflow-2026-48892, CLEANSTART-2026-XI09971, ECHO-b7b3-43e2-69ff, GHSA-9933-5rrp-mfwx, MINI-j587-q88j-48q6, MINI-w2vp-496v-hqmw and 1 more.