CVE-2026-25917 PUBLISHED

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

Assigner: apache
Reserved: 09.02.2026 Published: 18.04.2026 Updated: 18.04.2026

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.

Product Status

Vendor Apache Software Foundation
Product Apache Airflow
Versions Default: unaffected
  • affected from 0 to 3.2.0 (excl.)

Credits

  • Mahammad Huseynkhanli finder
  • Amogh Desai remediation developer

References

Problem Types

  • CWE-502: Deserialization of Untrusted Data CWE