CVE-2026-40961
Apache Airflow: Open Redirect Bypass Vulnerability
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.
INFO
Published Date :
June 1, 2026, 9:16 a.m.
Last Modified :
June 1, 2026, 9:16 a.m.
Remotely Exploit :
No
Source :
[email protected]
Solution
- Upgrade Apache Airflow to version 2.2.2 or later.
- Configure reverse proxy to strip untrusted 'next' parameters.
- Ensure all redirect URLs are validated.
- Restrict redirection to trusted domains.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2026-40961.
| URL | Resource |
|---|---|
| https://github.com/apache/airflow/pull/65557 | |
| https://lists.apache.org/thread/qmt8ksh7gty6b8hr9w294t94j36jdv1q |
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-40961 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2026-40961
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2026-40961 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-40961 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
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New CVE Received by [email protected]
Jun. 01, 2026
Action Type Old Value New Value Added 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. Added CWE CWE-601 Added Reference https://github.com/apache/airflow/pull/65557 Added Reference https://lists.apache.org/thread/qmt8ksh7gty6b8hr9w294t94j36jdv1q