CentOS Errata and Security Advisory CESA-2005:595 SquirrelMail security update for CentOS 3 i386: https://rhn.redhat.com/errata/RHSA-2005-595.html The following updated file has been uploaded and is currently syncing to the mirrors: i386: updates/i386/RPMS/squirrelmail-1.4.3a-11.EL3.centos.1.noarch.rpm source: updates/SRPMS/squirrelmail-1.4.3a-11.EL3.centos.1.src.rpm You may update your CentOS-3 i386 installations by running the command: yum update squirrelMail -sv