---
title: "CVE-2026-76186: Apache Airflow - Broken Access Control"
description: "Apache Airflow 3.3+ with Keycloak auth manager contains a broken access control caused by separate unauthenticated cookies for Keycloak tokens not bound to session identity, letting logged-in users escalate privileges by pairing foreign tokens, exploit requires valid Airflow login and foreign Keycloak tokens."
url: https://panop.io/threat-heartbeat/CVE-2026-76186/
---

# CVE-2026-76186 Apache Airflow - Broken Access Control

Apache Airflow 3.3+ with Keycloak auth manager contains a broken access control caused by separate unauthenticated cookies for Keycloak tokens not bound to session identity, letting logged-in users escalate privileges by pairing foreign tokens, exploit requires valid Airflow login and foreign Keycloak tokens.

CVSS base score 9.1 /10

Critical

CISA KEV

Not listed

Public exploit

None known

Authentication

Not required

EPSS

0.81% chance of exploitation in 30 days

[View the NVD record ↗](https://nvd.nist.gov/vuln/detail/CVE-2026-76186)

## Details

Type

Broken Access Control

Impact

Privilege Escalation

CVSS vector

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

Published

16 September 2026

Updated

15 October 2026

Weakness

[CWE-565](https://cwe.mitre.org/data/definitions/565.html)

## Vendor fix

Upgrade apache-airflow-providers-keycloak to version 0.10.0 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-2026-76186](https://nvd.nist.gov/vuln/detail/CVE-2026-76186)
- [http://www.openwall.com/lists/oss-security/2026/09/15/8](http://www.openwall.com/lists/oss-security/2026/09/15/8)
- [https://lists.apache.org/thread/5cqh5ojl3718ogb0q1dcd9vdr47z7gp3?users@airflow.apache.org](https://lists.apache.org/thread/5cqh5ojl3718ogb0q1dcd9vdr47z7gp3?users@airflow.apache.org)
- [https://github.com/apache/airflow/pull/72207](https://github.com/apache/airflow/pull/72207)
- [https://lists.apache.org/thread/5cqh5ojl3718ogb0q1dcd9vdr47z7gp3](https://lists.apache.org/thread/5cqh5ojl3718ogb0q1dcd9vdr47z7gp3)

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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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