Vulnerability · Published Aug 23, 2023 · Assigned by apache
CVE-2023-39441Apache Airflow SMTP Provider, Apache Airflow IMAP Provider, Apache Airflow: SMTP/IMAP client components allowed MITM due to missing Certificate Validation
Medium 5.9
In plain English
A medium-severity improper certificate validation in Apache Airflow from Apache Software Foundation. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.8% (higher than 57% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Official 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. 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 packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| PyPI | apache-airflow | 2.7.0 | GHSA-5f35-pq34-c87q |
| PyPI | apache-airflow | 2.7.0 | PYSEC-2026-1130 |
| PyPI | apache-airflow-providers-imap | 3.3.0 | GHSA-5f35-pq34-c87q |
| PyPI | apache-airflow-providers-imap | 3.3.0 | PYSEC-2026-2368 |
| PyPI | apache-airflow-providers-smtp | 1.3.0 | GHSA-5f35-pq34-c87q |
| PyPI | apache-airflow-providers-smtp | 1.3.0 | PYSEC-2026-2371 |
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Apache Software Foundation | Apache Airflow SMTP Provider | 0 – before 1.30 |
| Apache Software Foundation | Apache Airflow IMAP Provider | 0 – before 3.3.0 |
| Apache Software Foundation | Apache Airflow | 0 – before 2.7.0 |
Weakness: CWE-295