CVEvulnerability
CVE-2026-41016
5.9 MEDIUM
Official page ↗
- Status
- Analyzed
- Published
- 2026-04-30
- Last modified
- 2026-10-26
- Assigner
- [email protected]
- CVSS 3.1 (134c704f-9b21-4f2e-91b3-4a467353bcc0)
- 5.9 MEDIUM — CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
- Weaknesses
- CWE-295
Description
Apache Airflow's SMTP provider `SmtpHook` called Python's `smtplib.SMTP.starttls()` without an SSL context, so no certificate validation was performed on the TLS upgrade. A man-in-the-middle between the Airflow worker and the SMTP server could present a self-signed certificate, complete the STARTTLS upgrade, and capture the SMTP credentials sent during the subsequent `login()` call. Users are advised to upgrade to the `apache-airflow-providers-smtp` version that contains the fix.
Affected configurations
• apache airflow (>= 2.0.0 < 3.0.0)
Related
Weakness · CWE (1)
- CWE-295 Improper Certificate Validation weakness
References
- https://github.com/apache/airflow/pull/65346 Issue Tracking, Patch
- https://lists.apache.org/thread/gb202qy5r31bgdd3d51d7s5o1jh40kc4 Mailing List, Vendor Advisory