CVE-2026-25529

Postal is an open source SMTP server. CVE-2026-25529 affects versions before 3.3.5, where unescaped data could be injected into the admin interface, primarily via the API’s send/raw method. This HTML injection could permit arbitrary HTML and potentially unauthorised JavaScript execution in the ad...

CVE-2026-25529 Postal has HTML injection / XSS in message view

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...

PT-2026-25008

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...

CVE-2026-25529: Improper Neutralization of Input During Web Page Generation

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...