Apache Airflow: Execution API HITL Endpoints Missing Per-Task Authorization
Key facts
- Attack vector
- Network
- Privileges required
- Low
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Security bypass
- Confidentiality · integrity · availability
- High · High · None
- Fix status
- Fixed
Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA and GitHub. Impact type from CWE-862.
Summary
Apache Airflow versions 3.1.0 through 3.1.7 missing authorization vulnerability in the Execution API's Human-in-the-Loop (HITL) endpoints that allows any authenticated task instance to read, approve, or reject HITL workflows belonging to any other task instance. 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
- No
- 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 | 3.1.0 to before 3.1.8 | 3.1.8 | Patch available | CNA |
| — | apache-airflow (PyPI) | 3.1.0 to before 3.1.8 | 3.1.8 | Patch available | GHSA-8x34-9q3v-h7g8 |
- Apache Airflow VendorApache Affected 3.1.0 to before 3.1.8 Fixed in 3.1.8 Patch available CNA
- apache-airflow (PyPI) Vendor— Affected 3.1.0 to before 3.1.8 Fixed in 3.1.8 Patch available GHSA-8x34-9q3v-h7g8
Remediation
- Fix · CNA Apache Airflow (Apache Software Foundation) Fixed in 3.1.8
- Fix · GHSA-8x34-9q3v-h7g8 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-2026-22974 Exposure of resource to wrong sphere in Apache AirflowPriority MEDIUM 40
- 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-2026-30911
- 2026-10-03 Alias added: GHSA-8x34-9q3v-h7g8
- 2026-10-25 EPSS moved to the below the 50th percentile
- 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-2026-30911 · CVE Program
- CVE-2026-30911 · NVD
- FIRST EPSS
- GHSA-8x34-9q3v-h7g8 · GitHub Advisory Database · CC BY 4.0
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