Most recent entries from all

EUVD-2026-5416

fkie_cve-2024-34083

aiosmptd is a reimplementation of the Python stdlib smtpd.py based on asyncio. Prior to version 1.4.6, servers based on aiosmtpd accept extra unencrypted commands after STARTTLS, treating them as if they came from inside the encrypted connection. This could be exploited by a man-in-the-middle attack. Version 1.4.6 contains a patch for the issue.

GHSA-wgjv-9j3q-jhg8 — aiosmtpd STARTTLS unencrypted commands injection

Affected: PyPI: aiosmtpd

### Summary Servers based on aiosmtpd accept extra unencrypted commands after STARTTLS, treating them as if they came from inside the encrypted connection. This could be exploited by a MitM attack.

### References * [NO STARTTLS: Similar vulnerabilities discovered by previous researchers.](https://nostarttls.secvuln.info/)

OESA-2024-1695 — python-aiosmtpd security update

Affected: openEuler:22.03-LTS-SP1: python-aiosmtpd

This is a server for SMTP and related protocols, similar in utility to the standard library's smtpd.py module, but rewritten to be based on asyncio for Python 3. Security Fix(es): aiosmptd is a reimplementation of the Python stdlib smtpd.py based on asyncio. Prior to version 1.4.6, servers based on aiosmtpd accept extra unencrypted commands after STARTTLS, treating them as if they came from inside the encrypted connection. This could be exploited by a man-in-the-middle attack. Version 1.4.6 contains a patch for the issue.(CVE-2024-34083)

openSUSE-SU-2024:0243-1 — Security update for python-aiosmtpd

Security update for python-aiosmtpd

PYSEC-2026-1111 — aiosmtpd STARTTLS unencrypted commands injection

Affected: PyPI: aiosmtpd

### Summary Servers based on aiosmtpd accept extra unencrypted commands after STARTTLS, treating them as if they came from inside the encrypted connection. This could be exploited by a MitM attack.

### References * [NO STARTTLS: Similar vulnerabilities discovered by previous researchers.](https://nostarttls.secvuln.info/)

UBUNTU-CVE-2024-34083

Affected: Ubuntu:18.04:LTS: python-aiosmtpd, Ubuntu:20.04:LTS: python-aiosmtpd, Ubuntu:22.04:LTS: python-aiosmtpd, Ubuntu:24.04:LTS: python-aiosmtpd, Ubuntu:25.10: python-aiosmtpd, Ubuntu:26.04:LTS: python-aiosmtpd