CVE-2026-97636 Apache Software Foundation CVE debrief

Who should care

Airflow administrators and security teams responsible for multi-team deployments using HashiCorp Vault secrets backend should be aware of this vulnerability and take necessary actions to prevent unauthorized access to sensitive data. They should verify and update affected deployments to version 4.8.0 or later and monitor for suspicious activity in Airflow deployments.

Why it matters

CVE-2026-97636 allows bypassing team-scope guard in Apache Airflow HashiCorp provider, potentially leading to unauthorized access to sensitive data in multi-team deployments. Affected deployments should verify and update to version 4.8.0 or later.

• Potential unauthorized access to sensitive data
• Need to verify and update affected deployments
• Possible lateral movement within multi-team environments

Technical summary

The Apache Airflow HashiCorp provider's HashiCorp Vault secrets backend can be bypassed with a user-controlled key, allowing a Dag author scoped to one team to access secrets belonging to a different team in a multi-team deployment. The Execution API Variables route accepts a path-shaped key, making this vulnerability reachable from ordinary Dag code. This vulnerability is due to the backend's team-scoped lookup missing and then falling back to a team-agnostic path concatenated from the unvalidated key. Affected deployments should verify and update to version 4.8.0 or later.

Defensive priority

Medium priority for multi-team Airflow deployments using HashiCorp Vault secrets backend

Recommended defensive actions

• Upgrade to apache-airflow-providers-hashicorp version 4.8.0 or later
• Review and update multi-team Airflow deployments using HashiCorp Vault secrets backend
• Monitor for suspicious activity in Airflow deployments
• Verify affected deployments exist in managed environments and assign an owner for follow-up
• Review compensating controls for exposed systems while remediation is scheduled and verified
• Check relevant monitoring, detection, and logs for exposed assets that need extra review
• Track exceptions, retest remediated assets, and close the item only after evidence is documented

Evidence notes

Official CVE Program record and NIST NVD detail page provide vulnerability metadata. Apache Airflow GitHub pull request and mailing list discussion provide source-specific details. The CVE record was published on 2026-09-24T22:17:02.660Z and has not been modified since then. The vulnerability affects multi-team deployments using the HashiCorp Vault secrets backend. Single-team deployments are not affected.

Sources and references

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.