---
id: CVE-2026-46745
aliases:
  - GHSA-g283-w6fp-c4fc
  - PYSEC-2026-2366
title: >-
  Apache Airflow FAB Auth Manager contains an LDAP filter injection
  vulnerability
summary: >-
  Apache Airflow FAB Auth Manager contains an LDAP filter injection
  vulnerability
severity: medium
cvss: 5.3
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N'
vendor: apache-airflow-providers-fab
product: apache-airflow-providers-fab
ecosystem: pip
affected:
  - apache-airflow-providers-fab < 3.6.4
patched:
  - apache-airflow-providers-fab 3.6.4
published: '2026-05-26'
updated: '2026-07-13'
source: OSV
sourceUrl: 'https://osv.dev/vulnerability/GHSA-g283-w6fp-c4fc'
references:
  - url: 'https://nvd.nist.gov/vuln/detail/CVE-2026-46745'
  - url: 'https://github.com/apache/airflow/pull/66417'
  - url: >-
      https://github.com/apache/airflow/commit/3f7756bea71a7c7988511ec0557314ffb15fbe5e
  - url: 'https://github.com/apache/airflow'
  - url: 'https://lists.apache.org/thread/dvfy0bs181xwsrjrd3y5c55ztbzm8yhh'
  - url: 'http://www.openwall.com/lists/oss-security/2026/05/24/10'
tags:
  - osv
  - pip
epss: 0.00575
epssPercentile: 0.4621
ingestedAt: '2026-07-13T18:57:57.993Z'
---

## Overview

Apache Airflow FAB Auth Manager contains an LDAP filter injection vulnerability (CWE-90) that allows unauthenticated attackers to exfiltrate directory data or bypass authentication. Upgrade to apache-airflow-providers-fab 3.6.4 or later. If immediate upgrade is not possible, disable LDAP authentication until the provider can be updated.

## Affected packages

- `apache-airflow-providers-fab < 3.6.4`

## Remediation

Upgrade to a patched release:

- `apache-airflow-providers-fab 3.6.4`