Medium severity · published Sep 29, 2026
CVE-2026-86843
Apache Airflow Teradata provider: SQL injection via unvalidated Dag Params in the compute-cluster example Dag
6.3
CVSS
0.6%
EPSS
No
On KEV
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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L
Attack vector
Network
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
Low
Integrity
Low
Availability
Low
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.6% · higher than 46% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
AA
Apache Airflow Teradata provider · Apache Software Foundation
before 3.7.0 · source: vendor
AP
Apache-airflow-providers-teradata · Apache
before 3.7.0 · source: NVD
Affected product
AA
Apache Airflow Teradata provider
Apache Software Foundation
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-86843
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-86843
patch
https://github.com/apache/airflow/pull/72714
vendor-advisory
https://lists.apache.org/thread/js9pmhj1j6552gpn1j8wdz579pb46t0d
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