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CVE-2026-40961

Apache Airflow: Open Redirect Bypass Vulnerability

Published: Jun 1, 2026Updated: Jun 2, 2026 Sources: CVE List NVDCWE-601
NVD MITRE
7.2CVSSHIGH
EPSS Score
0.6%
Top 54.8%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
Patch Available

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.

CVSS Vector Breakdown

AV:NAC:LPR:NUI:NS:CC:LI:LA:N
Exploitability
AV:NAttack Vector
Network
AC:LAttack Complexity
Low
PR:NPrivileges Required
None
UI:NUser Interaction
None
Scope
S:CScope
Changed
Impact
C:LConfidentiality
Low
I:LIntegrity
Low
A:NAvailability
None
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Weaknesses

CWE-601

Affected Products

airflowapache
On-premLibrary
OSS Libraries / generic-library
Apache AirflowApache Software Foundation
On-premWeb App
Web & CMS Plugins
apacheoss-projectUSWeb & CMS Pluginsaka apache http server, apache httpd
apache software foundationoss-projectUSWeb & CMS Pluginsaka apache foundation

Attack Graph

Products CVE Techniques Tactics

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Exploitability

Official Patch Available

MITRE ATT&CK

1 technique
Initial Access
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References

https://github.com/apache/airflow/pull/65557
github.com
https://lists.apache.org/thread/qmt8ksh7gty6b8hr9w294t94j36jdv1q
lists.apache.org
http://www.openwall.com/lists/oss-security/2026/05/31/2
openwall.com

Timeline

Published
Jun 1, 2026
Last Updated
Jun 2, 2026

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