{"id":"CVE-2023-39441","url":"https://www.cyber-defence.io/tools/cve/CVE-2023-39441","generatedAt":"2026-10-27T23:58:03.983Z","title":"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.","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","published":"2023-08-23T16:15:10.000Z","lastModified":"2026-06-17T06:12:21.000Z","status":"Modified","sourceIdentifier":"security@apache.org","cvss":{"version":"3.1","score":5.9,"severity":"MEDIUM","vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N"},"cwe":["CWE-295"],"affected":["apache/airflow","apache/apache-airflow-providers-imap","apache/apache-airflow-providers-smtp"],"epss":{"score":0.00804,"percentile":0.56463,"date":"2026-10-26","history":[]},"kev":{"listed":false},"exploits":{"count":0,"verified":false,"firstPublished":null,"source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[]},"verdict":{"level":"low","text":"Lower severity and a low EPSS score (0.80%). Track it; it rarely justifies an emergency change on its own."},"changes":[],"references":[{"url":"http://www.openwall.com/lists/oss-security/2023/08/23/2","tags":["Mailing List","Patch","Third Party Advisory"],"source":"security@apache.org"},{"url":"https://github.com/apache/airflow/pull/33070","tags":["Patch"],"source":"security@apache.org"},{"url":"https://github.com/apache/airflow/pull/33075","tags":["Patch"],"source":"security@apache.org"},{"url":"https://github.com/apache/airflow/pull/33108","tags":["Patch"],"source":"security@apache.org"},{"url":"https://lists.apache.org/thread/xzp4wgjg2b1o6ylk2595df8bstlbo1lb","tags":["Mailing List","Patch","Vendor Advisory"],"source":"security@apache.org"},{"url":"http://www.openwall.com/lists/oss-security/2023/08/23/2","tags":["Mailing List","Patch","Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://github.com/apache/airflow/pull/33070","tags":["Patch"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://github.com/apache/airflow/pull/33075","tags":["Patch"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://github.com/apache/airflow/pull/33108","tags":["Patch"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://lists.apache.org/thread/xzp4wgjg2b1o6ylk2595df8bstlbo1lb","tags":["Mailing List","Patch","Vendor Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2023-39441","epss":"https://www.first.org/epss/","kev":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog","exploitdb":"https://www.exploit-db.com/"},"licence":"CC BY 4.0 — link back to the CVE Explorer if you publish the results; upstream data remains subject to its own terms."}