id: PYSEC-2026-1130
published: "2026-07-07T11:45:22.929237Z"
modified: "2026-07-07T17:23:42.744366Z"
aliases:
- CVE-2023-39441
- GHSA-5f35-pq34-c87q
summary: Apache Airflow missing Certificate Validation
details: |-
  Apache Airflow SMTP Provider before 1.3.0, Apache Airflow IMAP Provider before 3.3.0, and Apache Airflow before 2.7.0 are affected by the Validation of OpenSSL Certificate vulnerability.
  
  The default SSL context with SSL library did not check a server's X.509 certificate.  Instead, the code accepted any certificate, which could result in the disclosure of mail server credentials or mail contents when the client connects to an attacker in a MITM position.
  
  Users are strongly advised to upgrade to Apache Airflow version 2.7.0 or newer, Apache Airflow IMAP Provider version 3.3.0 or newer, and Apache Airflow SMTP Provider version 1.3.0 or newer to mitigate the risk associated with this vulnerability
affected:
- package:
    name: apache-airflow
    ecosystem: PyPI
    purl: pkg:pypi/apache-airflow
  ranges:
  - type: ECOSYSTEM
    events:
    - introduced: "0"
    - fixed: 2.7.0
  versions:
  - 1.10.0
  - 1.10.1
  - 1.10.10
  - 1.10.10rc1
  - 1.10.10rc2
  - 1.10.10rc3
  - 1.10.10rc4
  - 1.10.10rc5
  - 1.10.11
  - 1.10.11rc1
  - 1.10.11rc2
  - 1.10.12
  - 1.10.12rc1
  - 1.10.12rc2
  - 1.10.12rc3
  - 1.10.12rc4
  - 1.10.13
  - 1.10.13rc1
  - 1.10.14
  - 1.10.14rc1
  - 1.10.14rc2
  - 1.10.14rc3
  - 1.10.14rc4
  - 1.10.15
  - 1.10.15rc1
  - 1.10.1b1
  - 1.10.1rc2
  - 1.10.2
  - 1.10.2b2
  - 1.10.2rc1
  - 1.10.2rc2
  - 1.10.2rc3
  - 1.10.3
  - 1.10.3b1
  - 1.10.3b2
  - 1.10.3rc1
  - 1.10.3rc2
  - 1.10.4
  - 1.10.4b2
  - 1.10.4rc1
  - 1.10.4rc2
  - 1.10.4rc3
  - 1.10.4rc4
  - 1.10.4rc5
  - 1.10.5
  - 1.10.5rc1
  - 1.10.6
  - 1.10.6rc1
  - 1.10.6rc2
  - 1.10.7
  - 1.10.7rc1
  - 1.10.7rc2
  - 1.10.7rc3
  - 1.10.8
  - 1.10.8rc1
  - 1.10.9
  - 1.10.9rc1
  - 1.8.1
  - 1.8.2
  - 1.8.2rc1
  - 1.9.0
  - 2.0.0
  - 2.0.0b1
  - 2.0.0b2
  - 2.0.0b3
  - 2.0.0rc1
  - 2.0.0rc2
  - 2.0.0rc3
  - 2.0.1
  - 2.0.1rc1
  - 2.0.1rc2
  - 2.0.2
  - 2.0.2rc1
  - 2.1.0
  - 2.1.0rc1
  - 2.1.0rc2
  - 2.1.1
  - 2.1.1rc1
  - 2.1.2
  - 2.1.2rc1
  - 2.1.3
  - 2.1.3rc1
  - 2.1.4
  - 2.1.4rc1
  - 2.1.4rc2
  - 2.2.0
  - 2.2.0b1
  - 2.2.0b2
  - 2.2.0rc1
  - 2.2.1
  - 2.2.1rc1
  - 2.2.1rc2
  - 2.2.2
  - 2.2.2rc1
  - 2.2.2rc2
  - 2.2.3
  - 2.2.3rc1
  - 2.2.3rc2
  - 2.2.4
  - 2.2.4rc1
  - 2.2.5
  - 2.2.5rc1
  - 2.2.5rc2
  - 2.2.5rc3
  - 2.3.0
  - 2.3.0b1
  - 2.3.0rc1
  - 2.3.0rc2
  - 2.3.1
  - 2.3.1rc1
  - 2.3.2
  - 2.3.2rc1
  - 2.3.2rc2
  - 2.3.3
  - 2.3.3rc1
  - 2.3.3rc2
  - 2.3.3rc3
  - 2.3.4
  - 2.3.4rc1
  - 2.4.0
  - 2.4.0b1
  - 2.4.0rc1
  - 2.4.1
  - 2.4.1rc1
  - 2.4.2
  - 2.4.2rc1
  - 2.4.3
  - 2.4.3rc1
  - 2.5.0
  - 2.5.0rc1
  - 2.5.0rc2
  - 2.5.0rc3
  - 2.5.1
  - 2.5.1rc1
  - 2.5.1rc2
  - 2.5.2
  - 2.5.2rc1
  - 2.5.2rc2
  - 2.5.3
  - 2.5.3rc1
  - 2.5.3rc2
  - 2.6.0
  - 2.6.0b1
  - 2.6.0rc1
  - 2.6.0rc2
  - 2.6.0rc3
  - 2.6.0rc4
  - 2.6.0rc5
  - 2.6.1
  - 2.6.1rc1
  - 2.6.1rc2
  - 2.6.1rc3
  - 2.6.2
  - 2.6.2rc1
  - 2.6.2rc2
  - 2.6.3
  - 2.6.3rc1
  - 2.7.0b1
  - 2.7.0rc1
  - 2.7.0rc2
references:
- type: ADVISORY
  url: https://nvd.nist.gov/vuln/detail/CVE-2023-39441
- type: WEB
  url: https://github.com/apache/airflow/pull/33070
- type: WEB
  url: https://github.com/apache/airflow/pull/33075
- type: WEB
  url: https://github.com/apache/airflow/pull/33108
- type: WEB
  url: https://github.com/apache/airflow/commit/38fc9cd823feafd8ec61d5d5c7eddb9e9162f755
- type: WEB
  url: https://github.com/apache/airflow/commit/3bd8f020e8b7bdeb7f618bdbdfb3557f117b29d3
- type: WEB
  url: https://github.com/apache/airflow/commit/dbacacbd4d476da757de148a4e747924c34fd7fe
- type: PACKAGE
  url: https://github.com/apache/airflow
- type: WEB
  url: https://lists.apache.org/thread/xzp4wgjg2b1o6ylk2595df8bstlbo1lb
- type: WEB
  url: http://www.openwall.com/lists/oss-security/2023/08/23/2
- type: PACKAGE
  url: https://pypi.org/project/apache-airflow
- type: ADVISORY
  url: https://github.com/advisories/GHSA-5f35-pq34-c87q
severity:
- type: CVSS_V3
  score: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N