Bug 2569030 (CVE-2026-40913)

Summary:	CVE-2026-40913 apache-airflow: apache-airflow: Information disclosure via the Import Errors API
Product:	[Other] Security Response	Reporter:	OSIDB Bzimport <bzimport>
Component:	vulnerability-draft	Assignee:	Product Security DevOps Team <prodsec-dev>
Status:	NEW ---	QA Contact:
Severity:	medium	Docs Contact:
Priority:	medium
Version:	unspecified	Keywords:	Security
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Hardware:	All
OS:	Linux
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Doc Text:	A flaw was found in Apache Airflow. An authenticated user with import error read permissions can view raw parse-failure stack traces for workflow files lacking registered Directed Acyclic Graphs (DAGs) through the Import Errors Application Programming Interface (API). This issue occurs when a file fails during parsing before defining a DAG or after all registered DAGs have been removed. Exploitation of this vulnerability leads to information disclosure, exposing sensitive internal file paths and source code to unauthorized users.	Story Points:	---
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oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
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Description OSIDB Bzimport 2026-11-09 10:11:37 UTC

Apache Airflow's public Import Errors API returns the raw parse-failure stack trace to any user with the `ImportError.can_read` permission when the failing file has no registered DAG. This happens when a file fails to parse before any DAG is defined, or when all of its previously registered DAGs are removed but the parse error remains. Users who should not see that file's details can read stack traces that may expose file paths and code.

Users are advised to upgrade to Apache Airflow 3.4.0 or later, which restricts these stack traces to users with the new `IMPORT_ERRORS_ALL` permission.