Medium [CVE-2026-81862] Apache Airflow's Teradata provider embedded cloud storage credentials directly into SQL statements
This medium-severity Apache Software Foundation advisory covers CVE-2026-81862; related products: Apache Airflow.
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Summary
Apache Airflow's Teradata provider embedded cloud storage credentials directly into SQL statements. `S3ToTeradataOperator` and `AzureBlobStorageToTeradataOperator` interpolate the source bucket's credentials as plain string literals into the `CREATE MULTISET TABLE...
LOCATION` statement whenever the bucket is private and no `teradata_authorization_name` is configured — which is the default credential path for both operators. The statement is then logged and executed, so the credentials reach two places outside the operator's control.
The two operators expose different credentials through different channels, and deployments should check both.
`S3ToTeradataOperator` takes its values from `s3_hook.get_credentials()`, which under an instance profile or IRSA returns runtime AWS credentials that were never registered with Airflow's secrets masker — and the STS session token is runtime-generated and therefore unmasked even when an AWS connection is configured.
Those credentials appear **in the Airflow task log**, readable by any user with log-view permission on the Dag.
- Apache Airflow Teradata provider before 3.7.0
Official advisory · high-confidence parse· fetched 7 days ago·verify at source
Mitigation checklist
- Users are advised to upgrade to `apache-airflow-providers-teradata` `3.7.0` or later, which keeps the credential-bearing statement out of the Airflow task log.
- Upgrading does not remove the credentials from Teradata's query logs and monitoring views, which Airflow cannot redact: users should configure `teradata_authorization_name` with a Teradata `AUTHORIZATION` object so that credentials are never inlined, and should rotate any credentials previously used through the inline path.
Official advisory · high-confidence parse· fetched 7 days ago·verify at source
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