CVE-2020-14933: Squirrelmail

High severity, CVSS 8.8. EPSS: 1.4% chance of exploitation in the next 30 days.

compose.php in SquirrelMail 1.4.22 calls unserialize for the $attachments value, which originates from an HTTP POST request. NOTE: the vendor disputes this because these two conditions for PHP object injection are not satisfied: existence of a PHP magic method (such as __wakeup or __destruct), and any attack-relevant classes must be declared before unserialize is called (or must be autoloaded).

Affected products

• Squirrelmail Squirrelmail: version 1.4.22 only

Published 2020-06-20. Last modified 2026-06-17.