Exposure of resource to wrong sphere in Apache Airflow
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Information disclosure
- Confidentiality · integrity · availability
- High · None · None
- Fix status
- Fixed
Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA and GitHub. Impact type from CWE-668 and the CVSS impact.
Summary
Apache Airflow versions 3.1.0 through 3.1.7 session token (_token) in cookies is set to path=/ regardless of the configured [webserver] base_url or [api] base_url. This allows any application co-hosted under the same domain to capture valid Airflow session tokens from HTTP request headers, allowing full session takeover without attacking Airflow itself. Users are recommended to upgrade to Apache Airflow 3.1.8 or later, which resolves this issue.
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- Yes
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| Apache | Apache Airflow | 3.0.0 to before 3.1.8 | 3.1.8 | Patch available | CNA |
| — | apache-airflow (PyPI) | 3.0.0 to before 3.1.8 | 3.1.8 | Patch available | GHSA-4fhm-p86v-hwpx |
- Apache Airflow VendorApache Affected 3.0.0 to before 3.1.8 Fixed in 3.1.8 Patch available CNA
- apache-airflow (PyPI) Vendor— Affected 3.0.0 to before 3.1.8 Fixed in 3.1.8 Patch available GHSA-4fhm-p86v-hwpx
Remediation
- Fix · CNA Apache Airflow (Apache Software Foundation) Fixed in 3.1.8
- Fix · GHSA-4fhm-p86v-hwpx apache-airflow (PyPI) Fixed in 3.1.8 Advisory →
Fixed in the same release
Records fixed by the same vendor advisory or release, as the CNA lists them.
- Release ·
Apache Airflow 3.1.8
4 records Highest priority Priority MEDIUM 1 MEDIUM, 3 LOW
Other records, highest priority first
- TI-2026-23737 Apache Airflow: Execution API HITL Endpoints Missing Per-Task AuthorizationPriority LOW 36
- TI-2026-21416 Apache Airflow: Wildcard DagVersion Listing Bypasses Per‑DAG RBAC and Leaks MetadataPriority LOW 29
- TI-2026-22818 Apache Airflow: DAG authorization bypassPriority LOW 20
Timeline
- 2026-10-02 Threatist record created from CVE-2026-28779
- 2026-10-03 Alias added: GHSA-4fhm-p86v-hwpx
- 2026-11-03 Fix available: [email protected] · CNA
References
Advisory 3
More Apache Airflow vulnerabilities
- TI-2020-10905 Missing authentication in Apache Airflow KEVCVSS 3.1CRITICAL 9.8
- TI-2020-09638 OS command injection in Apache Airflow KEVCVSS 3.1HIGH 8.8
- TI-2022-19017 Apache Airflow <2.4.0 has an RCE in a bash example CVSS 3.1HIGH 8.8
- TI-2021-16140 Apache Airflow: Variable Import endpoint missed authentication check CVSS 3.1CRITICAL 9.8
- TI-2022-08169 Apache Airflow: RCE in example DAGs CVSS 3.1HIGH 8.8
- TI-2024-26776 Apache Airflow: DAG Author Code Execution possibility in airflow-scheduler CVSS 3.1HIGH 8.8
Sources
- CVE-2026-28779 · CVE Program
- CVE-2026-28779 · NVD
- FIRST EPSS
- GHSA-4fhm-p86v-hwpx · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences