CVE-2026-40961
Apache Airflow: Open Redirect Bypass Vulnerability
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.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- None
- User interaction
- None
What an attacker can affect
- Confidentiality
- Low
- Integrity
- Low
- Availability
- None
Exploit likelihood
What each source reports
CVE List Score used
Apache Airflow: Open Redirect Bypass Vulnerability
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.
- Record
CVE-2026-40961- CVSS 3.1
- 7.2 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N - Weakness
- CWE-601
- Updated
- 2026-11-03
EUVDEUVD-2026-33597
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.
- Record
EUVD-2026-33597- CVSS 3.1
- 7.2 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N - Updated
- 2026-11-03
GitHub AdvisoriesGHSA-6hcw-qqr8-pjj8
Apache Airflow: Authenticated users can bypass the `is_safe_url` check
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.
- Record
GHSA-6hcw-qqr8-pjj8- CVSS 3.1
- 7.2 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N - Weakness
- CWE-601
- Updated
- 2026-11-03
NVD
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.
- Record
CVE-2026-40961- CVSS 3.1
- 7.2 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N - Weakness
- CWE-601
- Updated
- 2026-11-03
OSV
Apache Airflow: Open Redirect Bypass Vulnerability
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.
- Record
CVE-2026-40961- CVSS 3.1
- 7.2 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N - Weakness
- CWE-601
- Updated
- 2026-11-04
OSVGHSA-6hcw-qqr8-pjj8
Apache Airflow: Authenticated users can bypass the `is_safe_url` check
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.
- Record
GHSA-6hcw-qqr8-pjj8- CVSS 3.1
- 7.2 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N - Weakness
- CWE-601
- Updated
- 2026-11-03
OSVPYSEC-2026-2345
Apache Airflow: Authenticated users can bypass the `is_safe_url` check
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.
- Record
PYSEC-2026-2345- CVSS 3.1
- 7.2 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N - Updated
- 2026-11-02
OSVBIT-airflow-2026-40961 No score
Apache Airflow: Open Redirect Bypass Vulnerability
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.
- Record
BIT-airflow-2026-40961- Updated
- 2026-11-02
Affected products
Affected packages
| Package | Affected | Fixed |
|---|---|---|
apache-airflowPyPI |
3.0.0b3 up to 3.2.2 | 3.2.2 |
airflowBitnami |
3.0.0 up to 3.2.2 | 3.2.2 |
apache-airflowPyPI |
3.0.0b3 up to 3.2.2, plus listed versions 3.0.03.0.0b43.0.0rc13.0.0rc1.post13.0.0rc1.post2 Show 45 moreShow less3.0.0rc1.post33.0.0rc1.post43.0.0rc23.0.0rc33.0.0rc43.0.13.0.1rc13.0.23.0.2rc13.0.2rc23.0.33.0.3rc13.0.3rc23.0.3rc33.0.3rc43.0.3rc53.0.3rc63.0.43.0.4rc13.0.4rc23.0.53.0.5rc13.0.5rc23.0.5rc33.0.63.0.6rc13.0.6rc23.1.03.1.0b13.1.0b23.1.0rc13.1.0rc23.1.13.1.1rc13.1.1rc23.1.23.1.2rc13.1.2rc23.1.33.1.3rc13.1.43.1.4rc13.1.4rc23.1.53.1.5rc1 |
3.2.2 |
apache-airflowPyPI |
before 3.2.2, plus listed versions 1.10.01.10.11.10.101.10.10rc11.10.10rc2 Show 45 moreShow less1.10.10rc31.10.10rc41.10.10rc51.10.111.10.11rc11.10.11rc21.10.121.10.12rc11.10.12rc21.10.12rc31.10.12rc41.10.131.10.13rc11.10.141.10.14rc11.10.14rc21.10.14rc31.10.14rc41.10.151.10.15rc11.10.1b11.10.1rc21.10.21.10.2b21.10.2rc11.10.2rc21.10.2rc31.10.31.10.3b11.10.3b21.10.3rc11.10.3rc21.10.41.10.4b21.10.4rc11.10.4rc21.10.4rc31.10.4rc41.10.4rc51.10.51.10.5rc11.10.61.10.6rc11.10.6rc21.10.7 |
3.2.2 |
History
| Recorded | Changed | Sources |
|---|---|---|
| facts | CVE List, EUVD, NVD, OSV | |
| affected, references | GitHub Advisories, OSV | |
| first indexed | CVE List, EUVD, GitHub Advisories, NVD, OSV |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2026-40961 is a high vulnerability (CVSS 7.2) in Apache Airflow, published June 1, 2026. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.65%, the 51st percentile. Fixed in apache-airflow 3.2.2.
References
github.com/apache/airflow/pull/65557
lists.apache.org/thread/qmt8ksh7gty6b8hr9w294t94j36jdv1q
openwall.com/lists/oss-security/2026/05/31/2
nvd.nist.gov/vuln/detail/CVE-2026-40961
Left out here: 259 versions. The JSON record has them.