CVE-2026-82310 Apache Software Foundation CVE debrief

Who should care

Airflow administrators and security teams responsible for managing user accounts and access to the Core API should assess exposure and verify the upgrade to version 3.9.0 or later.

Why it matters

CVE-2026-82310 allows tokens issued to deactivated user accounts to remain valid, enabling continued access to the Core API. Airflow administrators should verify exposure, upgrade to version 3.9.0 or later, and monitor access for previously deactivated accounts.

• Verification of user account deactivation and token revocation is required to prevent indefinite access
• Upgrade to version 3.9.0 or later is necessary to address the vulnerability
• Monitoring of Core API access for previously deactivated accounts is recommended

Technical summary

The CVE-2026-82310 vulnerability affects Apache Airflow deployments using version 3 with the FAB auth manager and Core API token authentication. When an administrator deactivates a user account, the associated tokens are not properly invalidated, allowing continued access to the Core API. This issue is addressed in version 3.9.0 or later of the apache-airflow-providers-fab package. The vulnerability allows tokens issued to deactivated user accounts to remain valid, enabling continued access to the Core API. Airflow administrators should verify exposure, upgrade to version 3.9.0 or later, and monitor access for previously deactivated accounts.

Defensive priority

Airflow administrators should verify and upgrade to version 3.9.0 or later

Recommended defensive actions

• Upgrade to version 3.9.0 or later of apache-airflow-providers-fab
• Verify user account deactivation and token revocation
• Monitor Core API access for previously deactivated accounts
• Confirm whether affected product deployments exist in managed environments and assign an owner for follow-up
• Review the supplied official advisory or CVE record to validate affected scope, severity, and vendor guidance
• Plan vendor-supported updates or mitigations through normal change control where exposure is confirmed
• Check relevant monitoring, detection, and logs for exposed assets that need extra review

Evidence notes

The CVE record and NVD entry provide details on the vulnerability in Apache Airflow FAB provider. The issue allows tokens issued to a deactivated user account to remain valid, enabling continued access to the Core API. The problem affects deployments using Airflow 3 with the FAB auth manager and Core API token authentication.

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.