CVE-2009-1578: Squirrelmail

Medium severity, CVSS 4.3. EPSS: 2% chance of exploitation in the next 30 days.

Multiple cross-site scripting (XSS) vulnerabilities in SquirrelMail before 1.4.18 and NaSMail before 1.7 allow remote attackers to inject arbitrary web script or HTML via vectors involving (1) certain encrypted strings in e-mail headers, related to contrib/decrypt_headers.php; (2) PHP_SELF; and (3) the query string (aka QUERY_STRING).

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.