CVE-2026-40961
Apache Airflow: Open Redirect Bypass Vulnerability
7.2
HIGH
CVSS 3.1
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.
How to fix CVE-2026-40961
To remediate CVE-2026-40961, upgrade the affected package to a fixed version below.
- —upgrade to 3.2.2 or later
Is CVE-2026-40961 being exploited?
No exploitation signal available. Neither CISA KEV nor a current EPSS score has been published for CVE-2026-40961.
Affected packages (1)
- >= 3.0.0, < 3.2.2
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | HIGH7.2 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N |