CVE-2026-49486

Description

The Apache Airflow FTP provider's `FTPSHook.get_conn()` created an `ftplib.FTP_TLS` connection but never called `prot_p()`, so although the control channel was TLS-protected the data channel was transmitted in cleartext. Any deployment using `FTPSHook` or `FTPSFileTransmitOperator` to move files over FTPS exposed file contents and credentials-in-transit to a network attacker able to observe the data connection. Upgrade apache-airflow-providers-ftp to `3.15.1` or later, which issues `PROT P` to encrypt the data channel.

PUBLISHED Reserved 2026-05-31 | Published 2026-06-26 | Updated 2026-06-26 | Assigner apache

Problem types

CWE-319: Cleartext Transmission of Sensitive Information

Product status

Credits

Andrew Rukin (Arenadata) finder

Shubham Raj remediation developer

References

www.openwall.com/lists/oss-security/2026/06/26/1

github.com/apache/airflow/pull/67946 patch

lists.apache.org/thread/gwnsxlt9hfj5pc543wxtogbnjdn04xj1 vendor-advisory

cve.org (CVE-2026-49486)

nvd.nist.gov (CVE-2026-49486)

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