Directory traversal vulnerability in the posix_access function in PHP 5.2.6 and earlier allows remote attackers to bypass safe_mode restrictions via a .. (dot dot) in an http URL, which results in the URL being canonicalized to a local filename after the safe_mode check has successfully run.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.036
EPSS Ranking 87.2%