What’s Vulnerable › Vulnerabilities

CVE-2024-29733: Apache Airflow FTP Provider: FTP_TLS instance with unverified SSL context

• Severity: low (CVSS 2.7 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.6% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2024-04-21 · updated 2026-06-17
• Weakness: CWE-295

Description

Improper Certificate Validation vulnerability in Apache Airflow FTP Provider. The FTP hook lacks complete certificate validation in FTP_TLS connections, which can potentially be leveraged. Implementing proper certificate validation by passing context=ssl.create_default_context() during FTP_TLS instantiation is used as mitigation to validate the certificates properly. This issue affects Apache Airflow FTP Provider: before 3.7.0. Users are recommended to upgrade to version 3.7.0, which fixes the issue.

Affected products

• Apache Software Foundation Apache Airflow FTP provider: before 3.7.0 — fixed in 3.7.0

How to fix

Upgrade to a fixed version: Apache Software Foundation Apache Airflow FTP provider 3.7.0. Check the vendor advisory for mitigations.

References

• http://www.openwall.com/lists/oss-security/2024/04/19/3
• https://docs.python.org/3/library/ssl.html#best-defaults
• https://github.com/apache/airflow/blob/95e26118b828c364755f3a8c96870f3591b01c31/airflow/providers/ftp/hooks/ftp.py#L280
• https://github.com/apache/airflow/pull/38266
• https://lists.apache.org/thread/265t5zbmtjs6h9fkw52wtp03nsbplky2
• http://www.openwall.com/lists/oss-security/2024/04/19/3
• https://docs.python.org/3/library/ssl.html#best-defaults
• https://github.com/apache/airflow/blob/95e26118b828c364755f3a8c96870f3591b01c31/airflow/providers/ftp/hooks/ftp.py#L280
• https://github.com/apache/airflow/pull/38266
• https://lists.apache.org/thread/265t5zbmtjs6h9fkw52wtp03nsbplky2

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