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Improper Certificate Validation Affecting airflow-3 package, versions <3.3.1-r0

Severity

 Recommended
low

Based on default assessment until relevant scores are available.

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  • Snyk IDSNYK-MINIMOSLATEST-AIRFLOW3-19958068
  • published20 Sept 2026
  • disclosed22 Sept 2026
Report a new vulnerability Found a mistake?

Introduced: 20 Sep 2026

NewCVE-2026-63374  (opens in a new tab)
CWE-295  (opens in a new tab)
CWE-297  (opens in a new tab)

How to fix?

Upgrade Minimos:latest airflow-3 to version 3.3.1-r0 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream airflow-3 package and not the airflow-3 package as distributed by Minimos. See How to fix? for Minimos:latest relevant fixed versions and status.

AnyIO is a high level asynchronous concurrency and networking framework that works on top of either Trio or asyncio. Prior to 4.14.2, connect_tcp() and TLSStream.wrap() can validate internationalized host names after the standard library converts them with IDNA 2003 instead of IDNA 2008. When a connection to a non-ASCII domain is hijacked or redirected, an attacker can obtain a legitimate certificate for the different ASCII hostname produced by IDNA 2003 and present it to the client, causing the malicious endpoint's certificate to validate. This issue is fixed in version 4.14.2.