https://vulnerability.circl.lu/rss/recent/all/10 Most recent entries from all 2026-09-30T12:30:57.121875+00:00 Vulnerability-Lookup info@circl.lu python-feedgen Contains only the most 10 recent entries. https://vulnerability.circl.lu/vuln/cve-2020-7247 CVE-2020-7247 2026-09-30T12:30:57.139175+00:00

smtp_mailaddr in smtp_session.c in OpenSMTPD 6.6, as used in OpenBSD 6.6 and other products, allows remote attackers to execute arbitrary commands as root via a crafted SMTP session, as demonstrated by shell metacharacters in a MAIL FROM field. This affects the "uncommented" default configuration. The issue exists because of an incorrect return value upon failure of input validation.

 https://vulnerability.circl.lu/vuln/usn-4268-1 USN-4268-1 — OpenSMTPD vulnerability 2026-09-30T12:30:57.139242+00:00

Affected: Ubuntu:18.04:LTS: opensmtpd

It was discovered that OpenSMTPD incorrectly verified the sender's or receiver's e-mail addresses under certain conditions. An attacker could use this vulnerability to execute arbitrary commands as root.