https://vulnerability.circl.lu Contains only the most 10 recent entries. http://www.rssboard.org/rss-specification python-feedgen en Sun, 04 Oct 2026 19:54:29 +0000 https://vulnerability.circl.lu/vuln/cve-2026-41016 <p><strong>Affected:</strong> Apache Software Foundation Apache Airflow Providers SMTP</p> <p>Apache Airflow&#39;s SMTP provider `SmtpHook` called Python&#39;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.</p> <p><strong>Affected:</strong> Apache Software Foundation Apache Airflow Providers SMTP</p> <p>Apache Airflow&#39;s SMTP provider `SmtpHook` called Python&#39;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.</p> https://vulnerability.circl.lu/vuln/cve-2026-41016