CVE-2026-25529

Postal is an open source SMTP server. Postal versions less than 3.3.5 had a HTML injection vulnerability that allowed unescaped data to be included in the admin interface. The primary way for unescaped data to be added is via the API's "send/raw" method. This could allow arbitrary HTML to be...

Postal security breach

Postal is Postal open source a complete and fully functional mail server . It is intended for use by Web sites and Web servers. A security vulnerability exists in Postal versions prior to 3.0 that stems from vulnerability to SMTP smuggling attacks, allowing attackers to spoof incoming e-mail...