Unsafe sample input : use shell_exec to cat /tmp/tainted.txt sanitize : regular expression accepts everything construction : concatenation with simple quote

Unsafe sample input : use shell_exec to cat /tmp/tainted.txt sanitize : regular expression accepts everything construction : concatenation with simple quote

Safe sample input : use shell_exec to cat /tmp/tainted.txt sanitize : check if there is only letters and/or numbers construction : use of sprintf via a %s with simple quote

Safe sample input : use shell_exec to cat /tmp/tainted.txt sanitize : check if there is only letters and/or numbers construction : interpretation with simple quote

Safe sample input : use shell_exec to cat /tmp/tainted.txt sanitize : check if there is only letters and/or numbers construction : concatenation with simple quote

Safe sample input : use shell_exec to cat /tmp/tainted.txt sanitize : check if there is only letters and/or numbers construction : use of sprintf via a %s with simple quote

Safe sample input : use shell_exec to cat /tmp/tainted.txt sanitize : check if there is only letters and/or numbers construction : interpretation with simple quote

Safe sample input : use shell_exec to cat /tmp/tainted.txt sanitize : check if there is only letters and/or numbers construction : concatenation with simple quote

Safe sample input : use shell_exec to cat /tmp/tainted.txt sanitize : check if there is only letters and/or numbers construction : use of sprintf via a %s with simple quote

Safe sample input : use shell_exec to cat /tmp/tainted.txt sanitize : check if there is only letters and/or numbers construction : interpretation with simple quote

Safe sample input : use shell_exec to cat /tmp/tainted.txt sanitize : check if there is only letters and/or numbers construction : concatenation with simple quote

Safe sample input : use shell_exec to cat /tmp/tainted.txt sanitize : check if there is only letters and/or numbers construction : use of sprintf via a %s with simple quote

Safe sample input : use shell_exec to cat /tmp/tainted.txt sanitize : check if there is only letters and/or numbers construction : interpretation with simple quote

Safe sample input : use shell_exec to cat /tmp/tainted.txt sanitize : check if there is only letters and/or numbers construction : concatenation with simple quote

Safe sample input : use shell_exec to cat /tmp/tainted.txt sanitize : check if there is only letters and/or numbers construction : use of sprintf via a %s with simple quote

Safe sample input : use shell_exec to cat /tmp/tainted.txt sanitize : check if there is only letters and/or numbers construction : interpretation with simple quote

Safe sample input : use shell_exec to cat /tmp/tainted.txt sanitize : check if there is only letters and/or numbers construction : concatenation with simple quote

Safe sample input : use shell_exec to cat /tmp/tainted.txt sanitize : check if there is only letters and/or numbers construction : use of sprintf via a %s with simple quote

Safe sample input : use shell_exec to cat /tmp/tainted.txt sanitize : check if there is only letters and/or numbers construction : interpretation with simple quote

Safe sample input : use shell_exec to cat /tmp/tainted.txt sanitize : check if there is only letters and/or numbers construction : concatenation with simple quote

Safe sample input : use shell_exec to cat /tmp/tainted.txt sanitize : check if there is only letters and/or numbers construction : use of sprintf via a %s with simple quote

Safe sample input : use shell_exec to cat /tmp/tainted.txt sanitize : check if there is only letters and/or numbers construction : interpretation with simple quote

Safe sample input : use shell_exec to cat /tmp/tainted.txt sanitize : check if there is only letters and/or numbers construction : concatenation with simple quote

Safe sample input : use shell_exec to cat /tmp/tainted.txt sanitize : check if there is only letters and/or numbers construction : use of sprintf via a %s with simple quote

Safe sample input : use shell_exec to cat /tmp/tainted.txt sanitize : check if there is only letters and/or numbers construction : interpretation with simple quote