CVE-2026-25604: Apache airflow providers amazon Authentication Bypass Vulnerability

MODERATE
Advisory Identifier: GHSA-rv5f-ccpm-xjj4
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CVSS 5.4
CWE-346
Published
Advisory Summary

CVE-2026-25604 is a MODERATE (CVSS 5.4) authentication bypass vulnerability (CWE-346: Origin Validation Error) affecting Apache airflow providers amazon libraries in the PyPI ecosystem. The issue involves apache airflow aws auth manager has host header injection leading to saml authentication bypass. Remediation is available by upgrading affected packages to version 9.22.0.

CVE-2026-25604 at a Glance

CVE Identifier CVE-2026-25604
GHSA Identifier GHSA-rv5f-ccpm-xjj4
Severity MODERATE
CVSS v3.1 Base Score 5.4
CWE Classification CWE-346: Origin Validation Error
Affected Product Apache airflow providers amazon
Package Ecosystem PyPI
Published Date
Last Updated

Security Impact

CVSS: 5.4

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

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

How to Fix CVE-2026-25604

To remediate this vulnerability, upgrade all affected Apache airflow providers amazon 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-amazon fixed: 9.22.0 
pip install apache-airflow-providers-amazon>=9.22.0
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-amazon

How to Check if You Are Affected

To determine whether your Python environment is affected by CVE-2026-25604, inspect your installed packages using pip:

pip show apache-airflow-providers-amazon

Analyze the terminal output to locate any version of Apache airflow providers amazon in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 9.22.0), your application is affected.

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

Technical Details

Vulnerability Mechanism & Technical Analysis

This vulnerability is classified under CWE-346: Origin Validation Error, where the product does not properly verify that the source of data or communication is valid. In Apache airflow providers amazon, 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

In AWS Auth manager, the origin of the SAML authentication has been used as provided by the client and not verified against the actual instance URL.  This allowed to gain access to different instances with potentially different access controls by reusing SAML response from other instances. You should upgrade to 9.22.0 version of provider if you use AWS Auth Manager.

CVE-2026-25604 Affected Apache airflow providers amazon Versions

1 component(s)
Fixed Versions:
9.22.0
Product / Package Ecosystem Affected Versions Fixed Version
apache-airflow-providers-amazon
pypi/apache-airflow-providers-amazon
PyPI
< 9.22.0
9.22.0

References

NVD — CVE-2026-25604 NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-25604
Apache airflow providers amazon Source Repository REPOSITORY
https://github.com/apache/airflow/pull/61368
Security Fix Commit FIX COMMIT
https://github.com/apache/airflow/commit/1a86aec01d827ba8caf41b645db56663a9a61850
Apache airflow providers amazon Source Repository REPOSITORY
https://github.com/apache/airflow
lists.apache.org/thread/spwwrsmwxod7... WEB
https://lists.apache.org/thread/spwwrsmwxod7fpttcd7n7zs46j839l77
Apache airflow providers amazon Security Information SECURITY
http://www.openwall.com/lists/oss-security/2026/03/09/6

Frequently Asked Questions

What is CVE-2026-25604?
CVE-2026-25604 is a security vulnerability in Apache airflow providers amazon involving Apache Airflow AWS Auth Manager has Host Header Injection Leading to SAML Authentication Bypass under CWE-346: Origin Validation Error.
Which Apache airflow providers amazon versions are affected?
Affected versions include releases prior to 9.22.0 across affected packages: apache-airflow-providers-amazon.
What version fixes CVE-2026-25604?
Upgrading to 9.22.0 (or the latest patched release for your respective branch) resolves the vulnerability.
Is apache-airflow-providers-amazon affected?
Yes, apache-airflow-providers-amazon is affected in releases prior to 9.22.0. Upgrade your dependency to 9.22.0 or later.
What is the CVSS score of CVE-2026-25604?
CVE-2026-25604 has a CVSS v3.1 base score of 5.4 (MODERATE) with vector string CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N.
What CWE is associated with CVE-2026-25604?
CVE-2026-25604 is classified under CWE-346: Origin Validation Error (The product does not properly verify that the source of data or communication is valid.).
How can I check PyPI dependencies for CVE-2026-25604?
Run the dependency tree command: 'pip show apache-airflow-providers-amazon'. 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-rv5f-ccpm-xjj4",
  "modified" : "2026-03-10T01:22:21Z",
  "published" : "2026-03-09T12:31:38Z",
  "aliases" : [ "CVE-2026-25604" ],
  "summary" : "Apache Airflow AWS Auth Manager has Host Header Injection Leading to SAML Authentication Bypass",
  "details" : "In AWS Auth manager, the origin of the SAML authentication has been used as provided by the client and not verified against the actual instance URL. \nThis allowed to gain access to different instances with potentially different access controls by reusing SAML response from other instances.\n\nYou should upgrade to 9.22.0 version of provider if you use AWS Auth Manager.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "PyPI",
      "name" : "apache-airflow-providers-amazon"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "9.22.0"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2026-25604"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/apache/airflow/pull/61368"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/apache/airflow/commit/1a86aec01d827ba8caf41b645db56663a9a61850"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/apache/airflow"
  }, {
    "type" : "WEB",
    "url" : "https://lists.apache.org/thread/spwwrsmwxod7fpttcd7n7zs46j839l77"
  }, {
    "type" : "WEB",
    "url" : "http://www.openwall.com/lists/oss-security/2026/03/09/6"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-346" ],
    "severity" : "MODERATE",
    "github_reviewed" : true,
    "github_reviewed_at" : "2026-03-10T01:22:21Z",
    "nvd_published_at" : "2026-03-09T11:16:06Z"
  }
}