Goal Reached Thanks to every supporter — we hit 100%!

Goal: 1000 CNY · Raised: 1359 CNY

100%
Buy Us a Coffee

CVE-2026-41016— Apache Airflow Providers SMTP: No certificate validation on SMTP STARTTLS connections in SMTP provider

Quick assessment

Affected
Apache Software Foundation Apache Airflow Providers SMTP
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Apache Airflow是美国阿帕奇（Apache）基金会的一套具有创建、管理和监控工作流程功能的开源平台。该平台具有可扩展和动态监控等特点。 Apache Airflow存在信任管理问题漏洞，该漏洞源于SmtpHook调用smtplib.SMTP.starttls()时未使用SSL上下文，未进行证书验证，可能导致中间人攻击者捕获SMTP凭据。

AI Predicted 6.5 Difficulty: Moderate EPSS 0.27% · P19

Affected Version Matrix 1

VendorProduct Version RangeStatus
Apache Software Foundation Apache Airflow Providers SMTP 2.0.0< 3.0.0 affected
Get alerts for future matching vulnerabilities Log in to subscribe

I. Basic Information for CVE-2026-41016

Vulnerability Information
Have questions about the vulnerability? See if Shenlong's analysis helps!
View Shenlong Deep Dive ↗

Although we use advanced large model technology, its output may still contain inaccurate or outdated information.Shenlong tries to ensure data accuracy, but please verify and judge based on the actual situation.

Vulnerability Title
Apache Airflow Providers SMTP: No certificate validation on SMTP STARTTLS connections in SMTP provider
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
证书验证不恰当
Source: CVE Program / CVE List V5
Vulnerability Title
Apache Airflow 信任管理问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Apache Airflow是美国阿帕奇（Apache）基金会的一套具有创建、管理和监控工作流程功能的开源平台。该平台具有可扩展和动态监控等特点。 Apache Airflow存在信任管理问题漏洞，该漏洞源于SmtpHook调用smtplib.SMTP.starttls()时未使用SSL上下文，未进行证书验证，可能导致中间人攻击者捕获SMTP凭据。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
Apache Software Foundation Apache Airflow Providers SMTP 2.0.0 ~ 3.0.0 -

II. Public POCs for CVE-2026-41016

# POC Description Source Link Shenlong Link
AI-Generated POC Premium

No public POC found.

Login to generate AI POC

III. Intelligence Information for CVE-2026-41016

请登录查看更多情报信息。

Patches & Fixes for CVE-2026-41016 (1)

Mailing List Discussions for CVE-2026-41016 (1)

IV. Related Vulnerabilities

Same vendor: Apache Software Foundation
Same weakness: CWE-295