CVE-2026-25917

Apache Airflow: API extra-links triggers XCom deserialization/class instantiation (Airflow 3.1.5)

CVSS 7.2 HIGHEPSS 0.8%CWE-502

Dag Authors, who normally should not be able to execute code in the webserver context could craft XCom payload causing the webserver to execute arbitrary code. Since Dag Authors are already highly trusted, severity of this issue is Low. Users are recommended to upgrade to Apache Airflow 3.2.0, which fixes the issue.

CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H

Affected products

Apache Software Foundation · Apache Airflow

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References

https://github.com/apache/airflow/pull/61641 https://lists.apache.org/thread/6whgpkqbh12rvpfmvcg8b0vwlv4hq3po http://www.openwall.com/lists/oss-security/2026/04/17/9