CVE-2026-49486

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.

Score

CVSS 3.1 7.5 High

Status

Modified - security@apache.org

Published

2026-06-26

Last modified

2026-10-25

Weaknesses

CWE-319

Affected products

• Apache-airflow-providers-ftp (Apache)
• Apache Airflow Ftp Provider (Apache Software Foundation)

References

• https://github.com/apache/airflow/pull/67946
• https://lists.apache.org/thread/gwnsxlt9hfj5pc543wxtogbnjdn04xj1
• http://www.openwall.com/lists/oss-security/2026/06/26/1