"Servers running PHP are vulnerable to a number of serious
security exploits, including some which could allow an attacker to
execute malicious code, as well as denial-of-service exploits,
according to the PHP Group.
"The project has issued updates fixing the bugs, available from
the PHP website and directly from various operating system vendors.
'All Users of PHP are strongly encouraged to upgrade to this
release,' the PHP Group said in its advisory..."