https://seclists.org/oss-sec/2026/q2/743: CVE-2026-49267: Apache Airflow: No certificate validation on SMTP STARTTLS connections

Published May 31, 2026
·
Updated

Affected Software

1 affected component
Apache Apache Airflow>=2.0.0<3.2.2

Frequently Asked Questions

1

What is the severity of CVE-2026-49267?

The severity of CVE-2026-49267 is low.

2

What versions of Apache Airflow are affected by CVE-2026-49267?

Apache Airflow versions 2.0.0 before 3.2.2 are affected by CVE-2026-49267.

3

What is the main issue described in CVE-2026-49267?

CVE-2026-49267 describes the lack of certificate validation on SMTP STARTTLS connections in Apache Airflow.

4

How do I fix CVE-2026-49267?

To fix CVE-2026-49267, upgrade Apache Airflow to version 3.2.2 or later.

5

What functionality is impacted by CVE-2026-49267 in Apache Airflow?

CVE-2026-49267 impacts the EmailOperator and the underlying email helpers in Apache Airflow.

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