GitHub Advisoryadvisory · PyPI

GHSA-6hcw-qqr8-pjj8 Apache Airflow: Authenticated users can bypass the `is_safe_url` check

HIGH Published 2026-06-01 Modified 2026-11-02 Official page ↗
Aliases
CVE-2026-40961
Ecosystem
PyPI
Packages
apache-airflow
Severity
High
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N
Weaknesses
CWE-601
Reviewed
2026-07-07

Affected packages

• PyPI apache-airflow: >= 3.0.0b3, < 3.2.2 → fixed in 3.2.2

Description

A bug in the login redirect route in Apache Airflow allowed authenticated users to craft URLs that bypassed the `is_safe_url` check, enabling redirection from a trusted Airflow domain to an attacker-controlled origin. Users are advised to upgrade to `apache-airflow` 3.2.2 or later. As a defense-in-depth mitigation, deployment operators can place Airflow behind a reverse proxy that strips off-domain `next=` query parameters before they reach the login endpoint.

Related

Alias · CVE (1)

  • CVE-2026-40961 A bug in the login redirect route in Apache Airflow allowed authenticated users to craft URLs that bypassed the `is_safe_url` check,… vulnerability

Weakness · CWE (1)

  • CWE-601 URL Redirection to Untrusted Site weakness

References