CVE-2009-1581: Squirrelmail

Medium severity, CVSS 4.3. EPSS: 1.7% chance of exploitation in the next 30 days.

functions/mime.php in SquirrelMail before 1.4.18 does not protect the application's content from Cascading Style Sheets (CSS) positioning in HTML e-mail messages, which allows remote attackers to spoof the user interface, and conduct cross-site scripting (XSS) and phishing attacks, via a crafted message.

Affected products

• Squirrelmail Squirrelmail: any version; up to and including 1.4.17; version 0.1 only; version 0.1.1 only; version 0.1.2 only; version 0.2 only; …

Published 2009-05-14. Last modified 2026-06-16.