GHSA-fgch-86x8-fv43
Apache Airflow FTP provider: FTP Provider does not protect FTPS data channel (missing PROT_P)
Packages
| Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|
| PyPI | apache-airflow-providers-ftp | < 3.15.1 | 3.15.1 |
Details
As written in the advisory (Markdown source, shown as plain text).
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.
References
External links from the advisory. They lead to third-party sites.
- https://nvd.nist.gov/vuln/detail/CVE-2026-49486
- https://github.com/apache/airflow/pull/67946
- https://github.com/apache/airflow/commit/a929d142d667f71dea29c565a7167216a9c30378
- https://github.com/apache/airflow
- https://github.com/apache/airflow/releases/tag/providers-ftp/3.15.1
- https://github.com/pypa/advisory-database/tree/main/vulns/apache-airflow-providers-ftp/PYSEC-2026-238.yaml
- https://lists.apache.org/thread/gwnsxlt9hfj5pc543wxtogbnjdn04xj1
- http://www.openwall.com/lists/oss-security/2026/06/26/1