CVE-2026-45192: Apache Airflow: Incomplete Redaction of Sensitive Fields in Connection Extra API Response

[Rahul Vats <rahulvats () apache org>]

Severity: low 

Affected versions:

- Apache Airflow (apache-airflow) before 3.2.2

Description:

A bug in the GET `/api/v2/connections/{connection_id}` REST API endpoint in Apache Airflow allowed an authenticated 
UI/API user with Connection-read permission to retrieve secrets stored in a Connection's `extra` JSON blob under field 
names not present in the redaction allowlist (`DEFAULT_SENSITIVE_FIELDS`) — for example, official Slack-provider 
credential field names were returned in plaintext. Affects deployments that store credentials in Connection `extra` 
blobs and grant Connection-read access to multiple users. Users are advised to upgrade to `apache-airflow` 3.2.2 or 
later. As a defense-in-depth mitigation, deployment operators can store sensitive credential values in a secret-backend 
rather than inlined into the Connection's `extra` field.

Credit:

Or Sahar, Secure From Scratch (finder)
Jarek Potiuk (@potiuk) (remediation developer)

References:

https://github.com/apache/airflow/pull/66673
https://airflow.apache.org/
https://www.cve.org/CVERecord?id=CVE-2026-45192