CVE-2009-1381: Squirrelmail Imap General.php

Medium severity, CVSS 6.8. EPSS: 2.9% chance of exploitation in the next 30 days.

The map_yp_alias function in functions/imap_general.php in SquirrelMail before 1.4.19-1 on Debian GNU/Linux, and possibly other operating systems and versions, allows remote attackers to execute arbitrary commands via shell metacharacters in a username string that is used by the ypmatch program. NOTE: this issue exists because of an incomplete fix for CVE-2009-1579.

Affected products

• Squirrelmail Imap General.php: version 1.2.2 only
• Squirrelmail Squirrelmail: version 1.2.5 only; version 1.2.6 only; version 1.2.6-rc1 only; version 1.2.7 only; version 1.2.8 only; version 1.2.9 only; …

Published 2009-05-22. Last modified 2026-06-16.