# CVE-2026-111455: Apache Airflow: Connections API: async connection test authorizes create at enqueue but overwrites a later-created connection at commit

Status: published. Published: 2026-11-09. Updated: 2026-11-09.

Apache Airflow's asynchronous connection test checked permissions when the test was queued — only create permission when the connection ID did not exist yet — but, when the test completed with `commit_on_success`, wrote the tested connection under that ID. A user allowed to create but not edit connections could overwrite a connection someone else had created in the meantime. Only deployments that enable the non-default `[core] test_connection` setting are affected. Users are advised to upgrade to apache-airflow 3.4.0 or later.

## Remediation

- fix: The reporting source identifies this reference as a patch. Check the advisory for affected versions and supported release branches. (source: CNA: apache) — https://github.com/apache/airflow/pull/74837

## Affected products and versions

- Apache Software Foundation / Apache Airflow (apache-airflow-core): ≥ 3.3.0; < 3.4.0 (affected, semver). Source: CNA: apache

## Severity and prioritization

- CISA KEV: No listing in collected sources

- EPSS: Not available

- SSVC: Not available

- Weaknesses: CWE-863

## Exploit evidence

No exploit evidence in collected sources. This is not proof of no exploitation.

## References

- https://github.com/apache/airflow/pull/74837 (CNA: apache; patch)

- https://lists.apache.org/thread.html/j3tqo8wd53mcyvkkw4z5pnt9tckks0j2 (CNA: apache; vendor-advisory)

- http://www.openwall.com/lists/oss-security/2026/11/09/18 (ADP: CVE)

## Provenance

- CNA: apache: https://www.cve.org/CVERecord?id=CVE-2026-111455; retrieved 2026-11-09; source updated 2026-11-09

Revision: 2d03ec2cf7488bf1454036d1695f62ed4c950be625a40cae368f187ca79578e3

Canonical: https://y2.dev/cve/CVE-2026-111455

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