https://cve.radiocsirt.org Contains only the most 10 recent entries. http://www.rssboard.org/rss-specification python-feedgen en Sun, 04 Oct 2026 21:15:13 +0000 https://cve.radiocsirt.org/vuln/cve-2023-51764 <p>Postfix through 3.8.5 allows SMTP smuggling unless configured with smtpd_data_restrictions=reject_unauth_pipelining and smtpd_discard_ehlo_keywords=chunking (or certain other options that exist in recent versions). Remote attackers can use a published exploitation technique to inject e-mail messages with a spoofed MAIL FROM address, allowing bypass of an SPF protection mechanism. This occurs because Postfix supports &lt;LF&gt;.&lt;CR&gt;&lt;LF&gt; but some other popular e-mail servers do not. To prevent attack variants (by always disallowing &lt;LF&gt; without &lt;CR&gt;), a different solution is required, such as the smtpd_forbid_bare_newline=yes option with a Postfix minimum version of 3.5.23, 3.6.13, 3.7.9, 3.8.4, or 3.9.</p> <p>Postfix through 3.8.5 allows SMTP smuggling unless configured with smtpd_data_restrictions=reject_unauth_pipelining and smtpd_discard_ehlo_keywords=chunking (or certain other options that exist in recent versions). Remote attackers can use a published exploitation technique to inject e-mail messages with a spoofed MAIL FROM address, allowing bypass of an SPF protection mechanism. This occurs because Postfix supports &lt;LF&gt;.&lt;CR&gt;&lt;LF&gt; but some other popular e-mail servers do not. To prevent attack variants (by always disallowing &lt;LF&gt; without &lt;CR&gt;), a different solution is required, such as the smtpd_forbid_bare_newline=yes option with a Postfix minimum version of 3.5.23, 3.6.13, 3.7.9, 3.8.4, or 3.9.</p> https://cve.radiocsirt.org/vuln/cve-2023-51764