Discuz! admin\styles.inc.php get-webshell bug

在文件admin\styles.inc.php里代码: if$newcvar && $newcsubst if$db-resultfirst"SELECT COUNT FROM $tableprestylevars WHERE variable='$newcvar' AND styleid='$id'" cpmsg'styleseditvariableduplicate', '', 'error'; elseif!pregmatch"/a-zA-Z\x7f-\xffa-zA-Z0-9\x7f-\xff/", $newcvar cpmsg'styleseditvariableillegal...