CVE-2026-25219: Apache Airlfow Sensitive Azure Service Bus Connection Vulnerability

MODERATE
Advisory Identifier: GHSA-4g48-54q2-fg7q
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CVSS 6.5
CWE-200
Published
Advisory Summary

CVE-2026-25219 is a MODERATE (CVSS 6.5) sensitive azure service bus connection vulnerability (CWE-200: Exposure of Sensitive Information to an Unauthorized Actor) affecting Apache Airlfow libraries in the PyPI ecosystem. The issue involves sensitive azure service bus connection string (and possibly other providers) exposed to users with view access. Remediation is available by upgrading affected packages to version 3.1.8.

CVE-2026-25219 at a Glance

CVE Identifier CVE-2026-25219
GHSA Identifier GHSA-4g48-54q2-fg7q
Severity MODERATE
CVSS v3.1 Base Score 6.5
CWE Classification CWE-200: Exposure of Sensitive Information to an Unauthorized Actor
Affected Product Apache Airlfow
Package Ecosystem PyPI
Published Date
Last Updated

Security Impact

CVSS: 6.5

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:H/I:N/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 High (C:H)
Integrity None (I:N)
Availability None (A:N)

How to Fix CVE-2026-25219

To remediate this vulnerability, upgrade all affected Apache Airlfow 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 fixed: 3.1.8 
pip install apache-airflow>=3.1.8
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

How to Check if You Are Affected

To determine whether your Python environment is affected by CVE-2026-25219, inspect your installed packages using pip:

pip show apache-airflow

Analyze the terminal output to locate any version of Apache Airlfow in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 3.1.8), your application is affected.

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

Technical Details

Vulnerability Mechanism & Technical Analysis

This vulnerability is classified under CWE-200: Exposure of Sensitive Information to an Unauthorized Actor, where the product exposes sensitive information to an actor that is not explicitly authorized to have access to that information. In Apache Airlfow, 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

The `access_key` and `connection_string` connection properties were not marked as sensitive names in secrets masker. This means that user with read permission could see the values in Connection UI, as well as when Connection was accidently logged to logs, those values could be seen in the logs. Azure Service Bus used those properties to store sensitive values. Possibly other providers could be also affected if they used the same fields to store sensitive data. If you used Azure Service Bus connection with those values set or if you have other connections with those values storing senesitve values, you should upgrade Airflow to 3.1.8.

CVE-2026-25219 Affected Apache Airlfow Versions

1 component(s)
Fixed Versions:
3.1.8
Product / Package Ecosystem Affected Versions Fixed Version
apache-airflow
pypi/apache-airflow
PyPI
< 3.1.8
3.1.8

References

NVD — CVE-2026-25219 NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-25219
Apache Airlfow Source Repository REPOSITORY
https://github.com/apache/airflow/pull/61580
Apache Airlfow Source Repository REPOSITORY
https://github.com/apache/airflow/pull/61582
Apache Airlfow Source Repository REPOSITORY
https://github.com/apache/airflow
lists.apache.org/thread/t4dlmqkn0njz... WEB
https://lists.apache.org/thread/t4dlmqkn0njz4chk3g7mdgzb96y4ttqh
Apache Airlfow Security Information SECURITY
http://www.openwall.com/lists/oss-security/2026/04/15/3

Frequently Asked Questions

What is CVE-2026-25219?
CVE-2026-25219 is a security vulnerability in Apache Airlfow involving Sensitive Azure Service Bus connection string (and possibly other providers) exposed to users with view access under CWE-200: Exposure of Sensitive Information to an Unauthorized Actor.
Which Apache Airlfow versions are affected?
Affected versions include releases prior to 3.1.8 across affected packages: apache-airflow.
What version fixes CVE-2026-25219?
Upgrading to 3.1.8 (or the latest patched release for your respective branch) resolves the vulnerability.
Is apache-airflow affected?
Yes, apache-airflow is affected in releases prior to 3.1.8. Upgrade your dependency to 3.1.8 or later.
What is the CVSS score of CVE-2026-25219?
CVE-2026-25219 has a CVSS v3.1 base score of 6.5 (MODERATE) with vector string CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N.
What CWE is associated with CVE-2026-25219?
CVE-2026-25219 is classified under CWE-200: Exposure of Sensitive Information to an Unauthorized Actor (The product exposes sensitive information to an actor that is not explicitly authorized to have access to that information.).
How can I check PyPI dependencies for CVE-2026-25219?
Run the dependency tree command: 'pip show apache-airflow'. 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-4g48-54q2-fg7q",
  "modified" : "2026-04-16T21:26:23Z",
  "published" : "2026-04-15T15:31:42Z",
  "aliases" : [ "CVE-2026-25219" ],
  "summary" : "Apache Airlfow: Sensitive Azure Service Bus connection string (and possibly other providers) exposed to users with view access",
  "details" : "The `access_key` and `connection_string` connection properties were not marked as sensitive names in secrets masker. This means that user with read permission could see the values in Connection UI, as well as when Connection was accidently logged to logs, those values could be seen in the logs. Azure Service Bus used those properties to store sensitive values. Possibly other providers could be also affected if they used the same fields to store sensitive data.\n\nIf you used Azure Service Bus connection with those values set or if you have other connections with those values storing senesitve values, you should upgrade Airflow to 3.1.8.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "PyPI",
      "name" : "apache-airflow"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "3.1.8"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2026-25219"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/apache/airflow/pull/61580"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/apache/airflow/pull/61582"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/apache/airflow"
  }, {
    "type" : "WEB",
    "url" : "https://lists.apache.org/thread/t4dlmqkn0njz4chk3g7mdgzb96y4ttqh"
  }, {
    "type" : "WEB",
    "url" : "http://www.openwall.com/lists/oss-security/2026/04/15/3"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-200" ],
    "severity" : "MODERATE",
    "github_reviewed" : true,
    "github_reviewed_at" : "2026-04-16T21:26:23Z",
    "nvd_published_at" : "2026-04-15T13:16:24Z"
  }
}