Vulnerabilities in pkg:pypi/apache-airflow-providers-fab

PACKAGE
Advisory Identifier: GHSA-g283-w6fp-c4fc
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Advisory Summary

CVE-2026-46745 is a MODERATE (CVSS 5.3) apache airflow fab auth manager vulnerability (CWE-90: Improper Neutralization of Special Elements used in an LDAP Query ('LDAP Injection')) affecting Apache airflow providers fab libraries in the PyPI ecosystem. The issue involves apache airflow fab auth manager contains an ldap filter injection vulnerability. Remediation is available by upgrading affected packages to version 3.6.4.

3 Known Advisory Record(s)
Package Vulnerability Intelligence

pkg:pypi/apache-airflow-providers-fab

3 Known Advisory Record(s)

Vulnerability advisories affecting package pkg:pypi/apache-airflow-providers-fab. Select an advisory below to view technical details or fixes.

Advisory ID CVE / NVD Severity Summary
GHSA-g283-w6fp-c4fc CVE-2026-46745 MODERATE Apache Airflow FAB Auth Manager contains an LDAP filter injection vulnerability
GHSA-62qf-qm3g-fvcw CVE-2024-42447 LOW Apache Airflow Providers FAB Insufficient Session Expiration vulnerability
GHSA-8863-4qmg-fr45 CVE-2024-45033 LOW Apache Airflow Fab Provider Insufficient Session Expiration vulnerability

CVE-2026-46745 at a Glance

CVE Identifier CVE-2026-46745
GHSA Identifier GHSA-g283-w6fp-c4fc
Severity MODERATE
CVSS v3.1 Base Score 5.3
CWE Classification CWE-90: Improper Neutralization of Special Elements used in an LDAP Query ('LDAP Injection')
Affected Product Apache airflow providers fab
Package Ecosystem PyPI
Published Date
Last Updated

Security Impact

CVSS: 5.3

The security impact metrics below are parsed directly from the CVSS v3.1 vector string (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N).

Attack Vector Network (AV:N)
Attack Complexity Low (AC:L)
Privileges Required None (PR:N)
User Interaction None (UI:N)
Scope Unchanged (S:U)
Confidentiality Low (C:L)
Integrity None (I:N)
Availability None (A:N)

How to Fix CVE-2026-46745

To remediate this vulnerability, upgrade all affected Apache airflow providers fab dependencies to a patched release. Both direct and transitive dependencies should be checked, as frameworks or security libraries may pull in vulnerable versions transitively.

apache-airflow-providers-fab fixed: 3.6.4 
pip install apache-airflow-providers-fab>=3.6.4
Verify Direct and Transitive Dependencies

Run the following command in your project directory to verify that all resolved dependencies use the patched release: 

pip show apache-airflow-providers-fab

How to Check if You Are Affected

To determine whether your Python environment is affected by CVE-2026-46745, inspect your installed packages using pip:

pip show apache-airflow-providers-fab

Analyze the terminal output to locate any version of Apache airflow providers fab in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 3.6.4), your application is affected.

Note: The pip show apache-airflow-providers-fab command checks currently installed packages in your active Python environment.

Technical Details

Vulnerability Mechanism & Technical Analysis

This vulnerability is classified under CWE-90: Improper Neutralization of Special Elements used in an LDAP Query ('LDAP Injection'), where the product constructs all or part of an ldap query using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended ldap query when it is sent to a downstream component. In Apache airflow providers fab, software state validation or input boundaries are circumvented during processing. Review the official source advisory statement below for specific affected components, classes, and reproduction details.

Source Advisory Statement

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.

CVE-2026-46745 Affected Apache airflow providers fab Versions

1 component(s)
Fixed Versions:
3.6.4
Product / Package Ecosystem Affected Versions Fixed Version
apache-airflow-providers-fab
pypi/apache-airflow-providers-fab
PyPI
< 3.6.4
3.6.4

References

NVD — CVE-2026-46745 NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-46745
Apache airflow providers fab Source Repository REPOSITORY
https://github.com/apache/airflow/pull/66417
Security Fix Commit FIX COMMIT
https://github.com/apache/airflow/commit/3f7756bea71a7c7988511ec0557314ffb15fbe5e
Apache airflow providers fab Source Repository REPOSITORY
https://github.com/apache/airflow
lists.apache.org/thread/dvfy0bs181xw... WEB
https://lists.apache.org/thread/dvfy0bs181xwsrjrd3y5c55ztbzm8yhh
Apache airflow providers fab Security Information SECURITY
http://www.openwall.com/lists/oss-security/2026/05/24/10

Frequently Asked Questions

What is CVE-2026-46745?
CVE-2026-46745 is a security vulnerability in Apache airflow providers fab involving Apache Airflow FAB Auth Manager contains an LDAP filter injection vulnerability under CWE-90: Improper Neutralization of Special Elements used in an LDAP Query ('LDAP Injection').
Which Apache airflow providers fab versions are affected?
Affected versions include releases prior to 3.6.4 across affected packages: apache-airflow-providers-fab.
What version fixes CVE-2026-46745?
Upgrading to 3.6.4 (or the latest patched release for your respective branch) resolves the vulnerability.
Is apache-airflow-providers-fab affected?
Yes, apache-airflow-providers-fab is affected in releases prior to 3.6.4. Upgrade your dependency to 3.6.4 or later.
What is the CVSS score of CVE-2026-46745?
CVE-2026-46745 has a CVSS v3.1 base score of 5.3 (MODERATE) with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N.
What CWE is associated with CVE-2026-46745?
CVE-2026-46745 is classified under CWE-90: Improper Neutralization of Special Elements used in an LDAP Query ('LDAP Injection') (The product constructs all or part of an LDAP query using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended LDAP query when it is sent to a downstream component.).
How can I check PyPI dependencies for CVE-2026-46745?
Run the dependency tree command: 'pip show apache-airflow-providers-fab'. This command lists direct and transitive dependencies in your build configuration so you can verify if a vulnerable version is resolved.
Machine-readable OSV JSON OSV v1.5 Schema
Normalized schema output
View Raw JSON 
{
  "schema_version" : "1.4.0",
  "id" : "GHSA-g283-w6fp-c4fc",
  "modified" : "2026-06-30T16:59:52Z",
  "published" : "2026-05-26T13:30:41Z",
  "aliases" : [ "CVE-2026-46745" ],
  "summary" : "Apache Airflow FAB Auth Manager contains an LDAP filter injection vulnerability",
  "details" : "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.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "PyPI",
      "name" : "apache-airflow-providers-fab"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "3.6.4"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2026-46745"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/apache/airflow/pull/66417"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/apache/airflow/commit/3f7756bea71a7c7988511ec0557314ffb15fbe5e"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/apache/airflow"
  }, {
    "type" : "WEB",
    "url" : "https://lists.apache.org/thread/dvfy0bs181xwsrjrd3y5c55ztbzm8yhh"
  }, {
    "type" : "WEB",
    "url" : "http://www.openwall.com/lists/oss-security/2026/05/24/10"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-90" ],
    "severity" : "MODERATE",
    "github_reviewed" : true,
    "github_reviewed_at" : "2026-06-30T16:59:52Z",
    "nvd_published_at" : "2026-05-25T11:16:18Z"
  }
}