---
id: CVE-2026-40961
aliases:
  - GHSA-6hcw-qqr8-pjj8
  - BIT-airflow-2026-40961
title: 'Apache Airflow: Authenticated users can bypass the `is_safe_url` check'
summary: 'Apache Airflow: Authenticated users can bypass the `is_safe_url` check'
severity: high
cvss: 7.2
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N'
vendor: apache-airflow
product: apache-airflow
ecosystem: pip
affected:
  - apache-airflow < 3.2.2
patched:
  - apache-airflow 3.2.2
published: '2026-06-01'
updated: '2026-07-08'
source: OSV
sourceUrl: 'https://osv.dev/vulnerability/GHSA-6hcw-qqr8-pjj8'
references:
  - url: 'https://nvd.nist.gov/vuln/detail/CVE-2026-40961'
  - url: 'https://github.com/apache/airflow/pull/65557'
  - url: 'https://github.com/apache/airflow'
  - url: 'https://lists.apache.org/thread/qmt8ksh7gty6b8hr9w294t94j36jdv1q'
  - url: 'http://www.openwall.com/lists/oss-security/2026/05/31/2'
tags:
  - osv
  - pip
epss: 0.00759
epssPercentile: 0.53366
ingestedAt: '2026-07-08T18:25:46.477Z'
---

## Overview

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.

## Affected packages

- `apache-airflow < 3.2.2`

## Remediation

Upgrade to a patched release:

- `apache-airflow 3.2.2`