CVE-2026-49296: Apache airflow Remote Code Execution Vulnerability

MODERATE
Advisory Identifier: GHSA-4fh7-7jx4-8f6c
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CVSS 6.5
CWE-639
Published
Advisory Summary

CVE-2026-49296 is a MODERATE (CVSS 6.5) remote code execution vulnerability (CWE-639: Authorization Bypass Through User-Controlled Key) affecting Apache airflow libraries in the PyPI ecosystem. The issue involves apache-airflow dag source authorization bypass exposes co-located dag source. Remediation is available by upgrading affected packages to version 3.3.0.

CVE-2026-49296 at a Glance

CVE Identifier CVE-2026-49296
GHSA Identifier GHSA-4fh7-7jx4-8f6c
Severity MODERATE
CVSS v3.1 Base Score 6.5
CWE Classification CWE-639: Authorization Bypass Through User-Controlled Key
Affected Product Apache airflow
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-2026-49296

To remediate this vulnerability, upgrade all affected Apache airflow 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: 3.3.0 
pip install apache-airflow>=3.3.0
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

How to Check if You Are Affected

To determine whether your Python environment is affected by CVE-2026-49296, inspect your installed packages using pip:

pip show apache-airflow

Analyze the terminal output to locate any version of Apache airflow in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 3.3.0), 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-639: Authorization Bypass Through User-Controlled Key, where the system's authorization functionality does not prevent one user from gaining access to another user's data or record by modifying the key value identifying the data. In Apache airflow, 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

Before apache-airflow 3.3.0, a user authorized to read one Dag could disclose the source of other Dags co-located in the same source file. `GET /api/v2/dagSources/{dag_id}` — and the equivalent Dag-source view in the UI — returned the entire source file without redacting Dags the caller was not authorized to read, bypassing per-DAG read authorization. Deployments that co-locate multiple Dags in a single file and rely on per-DAG access control to limit source visibility are affected; single-Dag-per-file deployments are not. Upgrade to apache-airflow 3.3.0 or later.

CVE-2026-49296 Affected Apache airflow Versions

1 component(s)
Fixed Versions:
3.3.0
Product / Package Ecosystem Affected Versions Fixed Version
apache-airflow
pypi/apache-airflow
PyPI
< 3.3.0
3.3.0

References

NVD — CVE-2026-49296 NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-49296
Apache airflow Source Repository REPOSITORY
https://github.com/apache/airflow/pull/67662
Security Fix Commit FIX COMMIT
https://github.com/apache/airflow/commit/992e602015b5e9a3fd297e18047cff9d85094c95
Apache airflow Source Repository REPOSITORY
https://github.com/apache/airflow
Apache airflow Release RELEASE
https://github.com/apache/airflow/releases/tag/3.3.0
Apache airflow Source Repository REPOSITORY
https://github.com/pypa/advisory-database/tree/main/vulns/apache-airflow/PYSEC-2026-2083.yaml
lists.apache.org/thread/qqv41t3oydkn... WEB
https://lists.apache.org/thread/qqv41t3oydkn9o14r2rfz1wkdrsp5jzn
Apache airflow Security Information SECURITY
http://www.openwall.com/lists/oss-security/2026/07/07/5

Frequently Asked Questions

What is CVE-2026-49296?
CVE-2026-49296 is a security vulnerability in Apache airflow involving apache-airflow DAG source authorization bypass exposes co-located DAG source under CWE-639: Authorization Bypass Through User-Controlled Key.
Which Apache airflow versions are affected?
Affected versions include releases prior to 3.3.0 across affected packages: apache-airflow.
What version fixes CVE-2026-49296?
Upgrading to 3.3.0 (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 3.3.0. Upgrade your dependency to 3.3.0 or later.
What is the CVSS score of CVE-2026-49296?
CVE-2026-49296 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-2026-49296?
CVE-2026-49296 is classified under CWE-639: Authorization Bypass Through User-Controlled Key (The system's authorization functionality does not prevent one user from gaining access to another user's data or record by modifying the key value identifying the data.).
How can I check PyPI dependencies for CVE-2026-49296?
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-4fh7-7jx4-8f6c",
  "modified" : "2026-08-12T19:23:53Z",
  "published" : "2026-07-07T12:31:36Z",
  "aliases" : [ "CVE-2026-49296" ],
  "summary" : "apache-airflow DAG source authorization bypass exposes co-located DAG source",
  "details" : "Before apache-airflow 3.3.0, a user authorized to read one Dag could disclose the source of other Dags co-located in the same source file. `GET /api/v2/dagSources/{dag_id}` — and the equivalent Dag-source view in the UI — returned the entire source file without redacting Dags the caller was not authorized to read, bypassing per-DAG read authorization. Deployments that co-locate multiple Dags in a single file and rely on per-DAG access control to limit source visibility are affected; single-Dag-per-file deployments are not. Upgrade to apache-airflow 3.3.0 or later.",
  "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" : "3.3.0"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2026-49296"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/apache/airflow/pull/67662"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/apache/airflow/commit/992e602015b5e9a3fd297e18047cff9d85094c95"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/apache/airflow"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/apache/airflow/releases/tag/3.3.0"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/pypa/advisory-database/tree/main/vulns/apache-airflow/PYSEC-2026-2083.yaml"
  }, {
    "type" : "WEB",
    "url" : "https://lists.apache.org/thread/qqv41t3oydkn9o14r2rfz1wkdrsp5jzn"
  }, {
    "type" : "WEB",
    "url" : "http://www.openwall.com/lists/oss-security/2026/07/07/5"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-639" ],
    "severity" : "MODERATE",
    "github_reviewed" : true,
    "github_reviewed_at" : "2026-08-12T19:23:53Z",
    "nvd_published_at" : "2026-07-07T10:16:41Z"
  }
}