Apache Airflow: Deserialization of task-controlled XCom values in the Scheduler during dependency evaluation
Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).
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| Apache Software Foundation | Apache Airflow | unaffected |
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| Apache | Airflow |
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No CVSS v4.0
No CVSS v3.0
No CVSS v2
This CVE is not in the KEV list.
Exploit prediction score: < 1% (0.283% probability within 30 days)
Key SSVC decision points have not yet been added.
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cvssV3_1
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Apache
Apache airflow |
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Apache
Apache airflow |
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| Description | Apache Airflow's scheduler fully deserializes XCom values written by task code while evaluating task dependencies. A Dag author, who controls what a task writes to XCom, therefore controls data that is deserialized inside the scheduler process - a context the Airflow security model reserves for code installed by the Deployment Manager, above the worker-scoped execution capability a Dag author is documented to have. Deployments that treat Dag authors as less trusted than Deployment Managers are affected, and the scheduler must be evaluating a task dependency that reads a task-written XCom value. Users of apache-airflow are recommended to upgrade to version 3.4.0 or later, which restricts dependency evaluation to primitive XCom values. | |
| Title | Apache Airflow: Deserialization of task-controlled XCom values in the Scheduler during dependency evaluation | |
| Weaknesses | CWE-502 | |
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