1 files changed, 1 insertions, 1 deletions

diff --git a/show_bug.cgi b/show_bug.cgi
index 803e1a07e..b2e747297 100755
--- a/show_bug.cgi
+++ b/show_bug.cgi
@@ -33,7 +33,7 @@ if ($::FORM{'GoAheadAndLogIn'}) {
 print "Content-type: text/html\n";
 print "\n";
 
-if (!defined $::FORM{'id'}) {
+if (!defined $::FORM{'id'} || $::FORM{'id'} !~ /^\s*\d+\s*$/) {
     print "<H2>Search By Bug Number</H2>\n";
     print "<FORM METHOD=GET ACTION=\"show_bug.cgi\">\n";
     print "You may find a single bug by entering its bug id here: \n";