What’s Vulnerable › Vulnerabilities

CVE-2026-48892: Apache Airflow: Config API leaks per-key secrets backend kwargs - masker bypass on synthetic options

• Severity: medium (CVSS 6.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.7% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-07-07 · updated 2026-10-25
• Weakness: CWE-200

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.

Affected products

• Apache Airflow: before 3.3.0 — fixed in 3.3.0

How to fix

Upgrade to a fixed version: Apache Airflow 3.3.0. Check the vendor advisory for mitigations.

References

• https://github.com/apache/airflow/pull/67622
• https://lists.apache.org/thread/pq5yy40079h6tzh3fxvw28dd8dbk72hk
• http://www.openwall.com/lists/oss-security/2026/07/07/4

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