July 26, 2002 by Massimo S.
The PHP Group today announced the details of a serious
vulnerability in PHP versions 4.2.0 and 4.2.1. A security
update, PHP 4.2.2, fixes the issue. Everyone running affected
versions of PHP is encouraged to upgrade immediately.
The new 4.2.2 release doesn't include other changes, so
upgrading from 4.2.1 is safe and painless.