CVE-2026-40961 json
Apache Airflow: Open Redirect Bypass Vulnerability
published 5mo ago modified 6d ago also BIT-airflow-2026-40961 , EUVD-2026-33597 , GHSA-6hcw-qqr8-pjj8 , PYSEC-2026-2345
- cvss
- 7.2
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.6%
- EPSS 0.6% chance of exploitation in 30 days, percentile 51%
- public exploits
- 0
- none known
Summary
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.
Patch / fix
- pypi apache-airflow 3.2.2
- bitnami airflow 3.2.2
- Apache Software Foundation Apache Airflow 3.2.2
- github.com/apache/airflow@555f355 commit
- github.com/apache/airflow@bfd1881 commit
- github.com/apache/airflow#65557 pull request
Is CVE-2026-40961 in your dependencies? Fencer shows which of your repositories are affected as soon as an advisory lands, and opens the fix as a pull request.
Check with FencerCISA SSVC
- Exploitation
- none
- Automatable
- yes
- Technical impact
- partial
- Assessed
- 5mo ago
Exploit prediction
0.65% chance of exploitation in the next 30 days, higher than 51% of all scored CVEs (FIRST EPSS, 2026-11-09).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CISA ADP | 3.1 | 7.2 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N |
| GitHub | 3.1 | 7.2 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N |
| CNA | 3.1 | 7.2 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N |
| OSV | 3.1 | 7.2 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N |
Affected packages
| ecosystem | package | affected | fixed in |
|---|---|---|---|
| pypi | apache-airflow | >=3.0.0b3, <3.2.2 <3.2.2 |
3.2.2 |
| bitnami | airflow | >=3.0.0, <3.2.2 |
3.2.2 |
Affected products
- Apache Software Foundation Apache Airflow
Classification
- Weakness
-
- CWE-601 URL Redirection to Untrusted Site
References
-
github.com
/apache/airflow/pull/65557
patch, web, issue-tracking
-
github.com
/apache/airflow/commit/555f35576e3143dec65a7fb9acd95891841b45f2
web
-
github.com
/apache/airflow/commit/bfd1881fa0cb1193f49dbac72d7462e66aaf8f25
web
-
lists.apache.org
/thread/qmt8ksh7gty6b8hr9w294t94j36jdv1q
vendor-advisory, web, mailing-list, advisory
-
openwall.com
/lists/oss-security/2026/05/31/2
web, mailing-list, third-party-advisory, advisory
-
nvd.nist.gov
/vuln/detail/CVE-2026-40961
advisory, web
-
github.com
/apache/airflow
package
-
github.com
/pypa/advisory-database/tree/main/vulns/apache-airflow/PYSEC-2026-2345.yaml
web
-
pypi.org
/project/apache-airflow
web, package
-
github.com
/advisories/GHSA-6hcw-qqr8-pjj8
advisory
Sources
- CVE List CVE-2026-40961
- GitHub Advisory GHSA-6hcw-qqr8-pjj8
- NVD CVE-2026-40961
- OSV BIT-airflow-2026-40961
- OSV PYSEC-2026-2345
Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.
CPEs and fixed versions use Anchore's correction of NVD's data: Added CPE configurations because not yet analyzed by NVD.