CVE-2026-40961

Name: CVE-2026-40961
Creator: NVD / NIST
Published: 2026-06-01T09:16:18.01+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.2/10EPSS 0.63%

Last modified Jun 17, 2026

CVE-2026-40961 is a high-severity vulnerability rated 7.2/10 on the CVSS scale. 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. EPSS estimates a 0.63% chance of exploitation in the next 30 days.

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.

Metrics

CVSS 3.1

7.2/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N

EPSS Probability

0.63%

45.4th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-601

Affected Software

Vendor	Product	Versions
Apache	Airflow	>= 3.0.0, < 3.2.2

References

https://github.com/apache/airflow/pull/65557Issue Tracking, Patch
https://lists.apache.org/thread/qmt8ksh7gty6b8hr9w294t94j36jdv1qMailing List, Vendor Advisory
http://www.openwall.com/lists/oss-security/2026/05/31/2Mailing List, Third Party Advisory

Timeline

Published: Jun 1, 2026
Last Modified: Jun 17, 2026
Status: Analyzed

Frequently Asked Questions

What is CVE-2026-40961?

How severe is CVE-2026-40961?

CVE-2026-40961 has a CVSS score of 7.2/10 (HIGH severity). The EPSS model estimates a 0.63% probability of exploitation in the next 30 days.

How do I fix CVE-2026-40961?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2026-40961?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST