PT-2026-140320
CVE-2026-86829
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Published
2026-11-09
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Updated
2026-11-09
Description by
Score
N/A
Not availableNo severity ratings or metrics are available. When they are, we'll update the corresponding info on the page.
Name of the Vulnerable Software and Affected Versions
Apache Airflow versions prior to 3.4.0
Description
The scheduler fully deserializes XCom values written by task code during the evaluation of task dependencies. This allows a DAG author to control data that is deserialized within the scheduler process, bypassing the security model that restricts such capabilities to the Deployment Manager. This issue affects deployments where DAG authors are considered less trusted than Deployment Managers and occurs when the scheduler evaluates a task dependency that reads a task-written XCom value.
Recommendations
Upgrade to version 3.4.0 or later.
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