---
title: "CVE-2026-82310: Apache Airflow FAB provider - Authentication Bypass"
description: "Apache Airflow FAB provider in versions before 3.9.0 contains a broken authentication caused by continued acceptance of unexpired tokens for deactivated user accounts in the Core API, letting attackers with valid tokens maintain role-scoped access indefinitely after account deactivation, exploit requires administrative deactivation of the user account."
url: https://panop.io/threat-heartbeat/CVE-2026-82310/
---

# CVE-2026-82310 Apache Airflow FAB provider - Authentication Bypass

Apache Airflow FAB provider in versions before 3.9.0 contains a broken authentication caused by continued acceptance of unexpired tokens for deactivated user accounts in the Core API, letting attackers with valid tokens maintain role-scoped access indefinitely after account deactivation, exploit requires administrative deactivation of the user account.

CVSS base score 7.2 /10

High

CISA KEV

Not listed

Public exploit

None known

Authentication

Required

EPSS

1.00% chance of exploitation in 30 days

[View the NVD record ↗](https://nvd.nist.gov/vuln/detail/CVE-2026-82310)

## Details

Type

Authentication Bypass

Impact

Broken Authentication

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H

Published

16 September 2026

Updated

15 October 2026

Weakness

[CWE-613](https://cwe.mitre.org/data/definitions/613.html)

## Vendor fix

Upgrade to apache-airflow-providers-fab version 3.9.0 or later.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

## References

- [https://nvd.nist.gov/vuln/detail/CVE-2026-82310](https://nvd.nist.gov/vuln/detail/CVE-2026-82310)
- [https://lists.apache.org/thread/85h9r50bmy8vgkgr5nyddryj1p5pxxy2?users@airflow.apache.org](https://lists.apache.org/thread/85h9r50bmy8vgkgr5nyddryj1p5pxxy2?users@airflow.apache.org)
- [https://github.com/apache/airflow/pull/72199](https://github.com/apache/airflow/pull/72199)
- [https://lists.apache.org/thread/85h9r50bmy8vgkgr5nyddryj1p5pxxy2](https://lists.apache.org/thread/85h9r50bmy8vgkgr5nyddryj1p5pxxy2)
- [http://www.openwall.com/lists/oss-security/2026/09/15/10](http://www.openwall.com/lists/oss-security/2026/09/15/10)

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## What this record can't tell you

- Whether you run the affected software, and where
- Whether an attacker can actually reach and exploit it
- The misconfigurations that never get a CVE number
- What it would cost the business, ranked into what to fix first

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