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CVE-2026-111421 Details

Description

Apache Airflow's Task Execution API stored XCom values written by a task without the reserved-key check applied elsewhere, so a Dag author's task could write an XCom that, when a user later viewed it through the API with deserialization enabled, made the API server instantiate classes from the `airflow.*` namespace with arguments the Dag author chose. This is an incomplete fix for CVE-2026-59242: users who applied that fix in apache-airflow 3.3.1 remain affected through this route and should upgrade to apache-airflow 3.4.0 or later.

Metrics

CVSS 3.x Severity and Vector Strings:

No CVSS 3.x data is available for this CVE.

References to Advisories, Solutions, and Tools

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URL	Source(s)	Tag(s)
https://github.com/apache/airflow/pull/72718	[email protected]
https://github.com/apache/airflow/pull/74829	[email protected]
https://lists.apache.org/thread.html/pwdwx354tv0x3m8wzfhh59r6wyztj2lk	[email protected]
https://www.cve.org/CVERecord?id=CVE-2026-59242	[email protected]

Weakness Enumeration

CWE-ID	CWE Name	Source
CWE-502	Deserialization of Untrusted Data	[email protected]

Affected Products

No affected product data is available for this CVE.

Change History

1 change record found show changes