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PYSEC-2026-2345

Vulnerability from pysec - Published: 2026-07-13 15:35 - Updated: 2026-07-13 16:03
VLAI
Details

A bug in the login redirect route in Apache Airflow allowed authenticated users to craft URLs that bypassed the is_safe_url check, enabling redirection from a trusted Airflow domain to an attacker-controlled origin. Users are advised to upgrade to apache-airflow 3.2.2 or later. As a defense-in-depth mitigation, deployment operators can place Airflow behind a reverse proxy that strips off-domain next= query parameters before they reach the login endpoint.

Severity
7.2 (High)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N
Impacted products
Name purl
apache-airflow pkg:pypi/apache-airflow
Aliases
To clipboard 

{
  "affected": [
    {
      "package": {
        "ecosystem": "PyPI",
        "name": "apache-airflow",
        "purl": "pkg:pypi/apache-airflow"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "3.2.2"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
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    }
  ],
  "aliases": [
    "CVE-2026-40961",
    "GHSA-6hcw-qqr8-pjj8"
  ],
  "details": "A bug in the login redirect route in Apache Airflow allowed authenticated users to craft URLs that bypassed the `is_safe_url` check, enabling redirection from a trusted Airflow domain to an attacker-controlled origin. Users are advised to upgrade to `apache-airflow` 3.2.2 or later. As a defense-in-depth mitigation, deployment operators can place Airflow behind a reverse proxy that strips off-domain `next=` query parameters before they reach the login endpoint.",
  "id": "PYSEC-2026-2345",
  "modified": "2026-07-13T16:03:26.118404Z",
  "published": "2026-07-13T15:35:22.838248Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-40961"
    },
    {
      "type": "WEB",
      "url": "https://github.com/apache/airflow/pull/65557"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/apache/airflow"
    },
    {
      "type": "WEB",
      "url": "https://lists.apache.org/thread/qmt8ksh7gty6b8hr9w294t94j36jdv1q"
    },
    {
      "type": "WEB",
      "url": "http://www.openwall.com/lists/oss-security/2026/05/31/2"
    },
    {
      "type": "PACKAGE",
      "url": "https://pypi.org/project/apache-airflow"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/advisories/GHSA-6hcw-qqr8-pjj8"
    }
  ],
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N",
      "type": "CVSS_V3"
    }
  ],
  "summary": "Apache Airflow: Authenticated users can bypass the `is_safe_url` check"
}



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