CVE-2026-97636
Apache Airflow HashiCorp provider: HashiCorp Vault secrets backend: team-scope guard bypass via user-controlled key
- State
- Published
- Severity
- 6.5 Medium
- Published
- Sep 24, 2026
- Updated
- Sep 25, 2026
- Reserved
- Sep 24, 2026
Description
Apache Airflow HashiCorp provider: the HashiCorp Vault secrets backend's team-scope guard can be bypassed with a user-controlled key. In a multi-team deployment, a Dag author scoped to one team can supply a Variable key containing a path separator that causes the backend to resolve a secret belonging to a different team, because after the team-scoped lookup misses the backend falls back to a team-agnostic path concatenated from the unvalidated key. The Execution API Variables route accepts a path-shaped key, so this is reachable from ordinary Dag code.
Affects multi-team deployments using the HashiCorp Vault secrets backend. Single-team deployments are not affected, as there is no cross-team boundary to cross. This is the same class as CVE-2026-86465, CVE-2026-68870, CVE-2026-68871 and CVE-2026-68872 in the Akeyless, Azure Key Vault, Yandex Lockbox and Amazon secrets backends.
Users of apache-airflow-providers-hashicorp are recommended to upgrade to version 4.8.0 or later, which fixes the issue.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 3.1 | 6.5 Medium | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N | CISA-ADP |
Weaknesses
- CWE-639 Authorization Bypass Through User-Controlled Key
Affected Products
| Product | Versions |
|---|---|
Apache Airflow HashiCorp providerApache Software Foundation |
|
References
- https://github.com/apache/airflow/pull/70006patch
- https://lists.apache.org/thread/l0fogo9dh5v07vnsxnhoh3c74othkr51vendor-advisory
- https://www.cve.org/CVERecord?id=CVE-2026-68870related
- https://www.cve.org/CVERecord?id=CVE-2026-68871related
- https://www.cve.org/CVERecord?id=CVE-2026-68872related
- https://www.cve.org/CVERecord?id=CVE-2026-86465related
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