Dashboard / CVE-2026-41016

CVE-2026-41016

MEDIUM
MEDIUM Priority: 0.02 BB Relevance: 62/100
Published: 2026-04-30 Modified: 2026-10-26 First seen: 2026-10-29 Status: active

Attack Surface

Network No Auth No Interaction Conf. Impact

CVSS Vector Breakdown

AV: Network
AC: High
PR: None
UI: None
S: Unchanged
C: High
I: None
A: None

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.

Weakness Classification (1)

Affected Software (1)

VendorProductVersion
apache airflow 2.0.0 – 3.0.0

References & Advisories (2)

Bug Bounty Relevance

62 / 100
✓ Network accessible
✓ No authentication
✓ No user interaction

CVSS Score

5.9 / 10.0 v3.1
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N

EPSS — Exploitation Probability

0.27%
Raw Score 0.002680
Percentile 18.9%
Date 2026-10-29

EPSS Trend

2026-10-29
0.00268
2026-10-28
0.00268

Intelligence Sources

nvd ref →

External Links