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Apache Airflow did not reject reserved serialization keys inside a Dag run's conf.

CVE-2026-111395

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.

Assessment

CVSS
Not yet scored
Severity
Unscored
Known exploited
Not listed in CISA KEV
Exploit availability
Nothing found in Exploit-DB, Metasploit, Nuclei or public PoC repositories
Published
9 November 2026
Last updated
9 November 2026
Assigner
apache

At the source

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