Vulnerability · Published Mar 9, 2026 · Assigned by apache
CVE-2026-25604Apache Airflow AWS Auth Manager - Host Header Injection Leading to SAML Authentication Bypass
Medium 5.4
In plain English
A medium-severity security flaw in Apache Airflow Providers Amazon from Apache Software Foundation. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.4% (higher than 35% of all known vulnerabilities). Ready-made attack tooling exists: public proof-of-concept code. Fixed versions are available - upgrade the affected package.
Official description
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.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| PyPI | apache-airflow-providers-amazon | 9.22.0 | GHSA-rv5f-ccpm-xjj4 |
| PyPI | apache-airflow-providers-amazon | 9.22.0 | PYSEC-2026-2363 |
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Apache Software Foundation | Apache Airflow Providers Amazon | 8.0.0 – before 9.22.0 |
Weakness: CWE-346 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N