Advisory [CVE-2026-49486] Apache Airflow FTP provider: FTP Provider does not protect FTPS data channel (missing PROT_P)
This security Apache Software Foundation advisory covers CVE-2026-49486 affecting Apache Airflow FTP provider.
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Summary
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.
- Apache Airflow FTP provider before 3.15.1
Official advisory · medium-confidence parse· fetched 1 month ago·verify at source
- 3.15.1
Official advisory · medium-confidence parse· fetched 1 month ago·verify at source
Mitigation checklist
- Upgrade apache-airflow-providers-ftp to `3.15.1` or later, which issues `PROT P` to encrypt the data channel.
Official advisory · medium-confidence parse· fetched 1 month ago·verify at source
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