CVE-2026-40961: apache software foundation apache airflow Open Redirect
Vulnerability summary
CVE-2026-40961 is a high (CVSS 7.2) Open Redirect vulnerability in apache software foundation apache airflow. EPSS estimates a 0.76% chance of exploitation in the next 30 days, higher than 54.4% of scored vulnerabilities.
Timeline
- 01-06-2026PublishedVulnerability first disclosed.
- 02-06-2026Last modifiedVulnerability information updated.
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 metrics
4 scores · 4 sources · 1 version- OSV · PypiEcosystem advisory · calculated7.2HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N
- OSV · ChainguardEcosystem advisory · calculated7.2HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N
- NVDNIST7.2HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N
EPSS trend
Probability
0.76%
Chance of exploitation in the next 30 days
Percentile
54%
Versus all other CVEs
30-day change
+0.11 pp
From 0.65% on 19-09-2026
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeAffected systems
Chainguard2 products
- airflow-2All versions (No fix recorded)
- airflow-core-2All versions (No fix recorded)
Apache1 product
- airflow≥ 3.0.0, < 3.2.2
Apache software foundation1 product
- apache airflow≥ 3.0.0, < 3.2.2
PyPI1 product
- apache-airflow< 3.2.2
4 vendors · 5 products
References
9 links
- github.com/apache/airflowPACKAGE