CVE-2026-86843 PUBLISHED

Apache Airflow Teradata provider: SQL injection via unvalidated Dag Params in the compute-cluster example Dag

Assigner: apache
Reserved: 08.09.2026 Published: 29.09.2026 Updated: 29.09.2026

The Apache Airflow Teradata provider's compute-cluster example Dag declared every one of its Dag Params as unconstrained free text and templated them straight into the compute-cluster operators, which interpolate those values into Teradata DDL. A user who is permitted to trigger that Dag - a lower-trust role than the Dag author, and one that needs no Teradata credentials of its own - could therefore supply SQL fragments that execute under the connection the task runs as, and could additionally redirect the task at any other connection defined in the deployment, because the connection id was itself a free-text Param. Only deployments that run this example Dag, or a Dag copied from it, are affected; the provider's operator code is unchanged. Users of apache-airflow-providers-teradata are recommended to upgrade to version 3.7.0 or later, whose example constrains the Params to validated identifiers and a closed value set and removes connection selection and free-form option strings from trigger-time input. Upgrading does not change a Dag already copied from the example; users who copied it should apply the same constraints to their copy.

Product Status

Vendor Apache Software Foundation
Product Apache Airflow Teradata provider
Versions Default: unaffected
  • affected from 0 to 3.7.0 (excl.)

Credits

  • Andrew Rukin (Arenadata) finder
  • Jarek Potiuk remediation developer

References

Problem Types

  • CWE-89: Improper Neutralization of Special Elements used in an SQL Command ('SQL Injection') CWE