CVE-2026-86843 Apache Airflow Teradata provider: SQL injection via unvalidated Dag Params in the compute-cluster example Dag
Attackers can execute arbitrary SQL and redirect connections by triggering a vulnerable example DAG with unvalidated parameters in the Apache Airflow Teradata provider.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-86843?
CVE-2026-86843 is a medium-severity SQL injection vulnerability in Apache Airflow Teradata provider, published on 29 Sep 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
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.
Weakness: CWE-89
Which versions are affected by CVE-2026-86843?
It affects 1 product.
Products include Apache Apache-Airflow-Providers-Teradata.
How do I fix CVE-2026-86843?
No fix has been published for CVE-2026-86843 yet. Limit exposure of the affected software until one is available.
Use parameterised queries everywhere and never build SQL by joining strings. Upgrade affected software first; a web application firewall only buys time. More about SQL injection.
Is CVE-2026-86843 being exploited?
There is no known exploitation of CVE-2026-86843 in the wild and no public exploit code.
Other vulnerabilities in Apache Airflow Teradata provider
Sources
Also known as GHSA-w623-968q-qp55.