Apache Airflow did not reject reserved serialization keys inside a Dag run's `conf`. A user allowed to trigger a Dag that uses a deadline alert with an asynchronous callback could pass a `conf` that, once the deadline was missed, either crashed the scheduler repeatedly or was rebuilt into objects inside the Triggerer. Users are advised to upgrade to apache-airflow 3.4.0 or later.
Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).
| Vendor | Product | Default status | Versions | ||||||
|---|---|---|---|---|---|---|---|---|---|
| Apache Software Foundation | Apache Airflow | unaffected |
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History
Mon, 09 Nov 2026 09:30:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Description | Apache Airflow did not reject reserved serialization keys inside a Dag run's `conf`. A user allowed to trigger a Dag that uses a deadline alert with an asynchronous callback could pass a `conf` that, once the deadline was missed, either crashed the scheduler repeatedly or was rebuilt into objects inside the Triggerer. Users are advised to upgrade to apache-airflow 3.4.0 or later. | |
| Title | Apache Airflow: Reserved serialization keys in Dag run conf crash the scheduler or are rebuilt as objects in the Triggerer via deadline callbacks | |
| Weaknesses | CWE-502 | |
| References |
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MITRE
Status: PUBLISHED
Assigner: apache
Published:
Updated: 2026-11-09T09:18:35.415Z
Reserved: 2026-10-15T23:36:49.102Z
Link: CVE-2026-111395
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Redhat
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Weaknesses