{"cve":"CVE-2023-39441","nvd":{"published":"2023-08-23T16:15:09.617","modified":"2026-06-17T06:12:20.513","status":"Modified","description":"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.\n\nThe 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.\n\nUsers 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","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N","score":5.9},"cwes":["CWE-295"],"references":["http://www.openwall.com/lists/oss-security/2023/08/23/2","https://github.com/apache/airflow/pull/33070","https://github.com/apache/airflow/pull/33075","https://github.com/apache/airflow/pull/33108","https://lists.apache.org/thread/xzp4wgjg2b1o6ylk2595df8bstlbo1lb"],"products":["apache:airflow","apache:apache-airflow-providers-imap","apache:apache-airflow-providers-smtp"],"source":"nvd","synced_at":"2026-10-19T21:39:14.809778102+00:00"},"epss":{"cve":"CVE-2023-39441","score":0.00804,"percentile":0.56741,"date":"2026-10-31"},"kev":null,"osv":[{"id":"GHSA-5f35-pq34-c87q","url":"https://osv.dev/vulnerability/GHSA-5f35-pq34-c87q","summary":"Apache Airflow missing Certificate Validation","modified":"2026-07-13T16:42:58.247431314Z","packages":[{"ecosystem":"PyPI","name":"apache-airflow-providers-smtp","purl":"pkg:pypi/apache-airflow-providers-smtp","ranges":["<1.3.0"],"fixed":["1.3.0"]},{"ecosystem":"PyPI","name":"apache-airflow-providers-imap","purl":"pkg:pypi/apache-airflow-providers-imap","ranges":["<3.3.0"],"fixed":["3.3.0"]},{"ecosystem":"PyPI","name":"apache-airflow","purl":"pkg:pypi/apache-airflow","ranges":["<2.7.0"],"fixed":["2.7.0"]}]},{"id":"PYSEC-2026-1130","url":"https://osv.dev/vulnerability/PYSEC-2026-1130","summary":"Apache Airflow missing Certificate Validation","modified":"2026-07-13T16:42:58.247431314Z","packages":[{"ecosystem":"PyPI","name":"apache-airflow","purl":"pkg:pypi/apache-airflow","ranges":["<2.7.0"],"fixed":["2.7.0"]}]},{"id":"PYSEC-2026-2368","url":"https://osv.dev/vulnerability/PYSEC-2026-2368","summary":"Apache Airflow missing Certificate Validation","modified":"2026-07-13T16:42:58.247431314Z","packages":[{"ecosystem":"PyPI","name":"apache-airflow-providers-imap","purl":"pkg:pypi/apache-airflow-providers-imap","ranges":["<3.3.0"],"fixed":["3.3.0"]}]},{"id":"PYSEC-2026-2371","url":"https://osv.dev/vulnerability/PYSEC-2026-2371","summary":"Apache Airflow missing Certificate Validation","modified":"2026-07-13T16:42:58.247431314Z","packages":[{"ecosystem":"PyPI","name":"apache-airflow-providers-smtp","purl":"pkg:pypi/apache-airflow-providers-smtp","ranges":["<1.3.0"],"fixed":["1.3.0"]}]}],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}