The error_log function in basic_functions.c in PHP before 4.4.4 and 5.x before 5.1.5 allows local users to bypass safe mode and open_basedir restrictions via a "php://" or other scheme in the third argument, which disables safe mode.

zend_hash_del_key_or_index in zend_hash.c in PHP before 4.4.3 and 5.x before 5.1.3 can cause zend_hash_del to delete the wrong element, which prevents a variable from being unset even when the PHP unset function is called, which might cause the variable's value to be used in security-relevant operations.

Directory traversal vulnerability in file.c in PHP 4.4.2 and 5.1.2 allows local users to bypass open_basedir restrictions allows remote attackers to create files in arbitrary directories via the tempnam function.

The copy function in file.c in PHP 4.4.2 and 5.1.2 allows local users to bypass safe mode and read arbitrary files via a source argument containing a compress.zlib:// URI.

PHP before 5.1.3-RC1 might allow remote attackers to obtain portions of memory via crafted binary data sent to a script that processes user input in the html_entity_decode function and sends the encoded results back to the client, aka a "binary safety" issue. NOTE: this issue has been referred to as a "memory leak," but it is an information leak that discloses memory contents.

Argument injection vulnerability in certain PHP 4.x and 5.x applications, when used with sendmail and when accepting remote input for the additional_parameters argument to the mb_send_mail function, allows context-dependent attackers to read and create arbitrary files by providing extra -C and -X arguments to sendmail. NOTE: it could be argued that this is a class of technology-specific vulnerability, instead of a particular instance; if so, then this should not be included in CVE.

Argument injection vulnerability in certain PHP 3.x, 4.x, and 5.x applications, when used with sendmail and when accepting remote input for the additional_parameters argument to the mail function, allows remote attackers to read and create arbitrary files via the sendmail -C and -X arguments. NOTE: it could be argued that this is a class of technology-specific vulnerability, instead of a particular instance; if so, then this should not be included in CVE.

The c-client library 2000, 2001, or 2004 for PHP before 4.4.4 and 5.x before 5.1.5 do not check the (1) safe_mode or (2) open_basedir functions, and when used in applications that accept user-controlled input for the mailbox argument to the imap_open function, allow remote attackers to obtain access to an IMAP stream data structure and conduct unauthorized IMAP actions.

Cross-site scripting (XSS) vulnerability in the phpinfo function in PHP 4.x up to 4.4.0 and 5.x up to 5.0.5 allows remote attackers to inject arbitrary web script or HTML via a crafted URL with a "stacked array assignment."

The parse_str function in PHP 4.x up to 4.4.0 and 5.x up to 5.0.5, when called with only one parameter, allows remote attackers to enable the register_globals directive via inputs that cause a request to be terminated due to the memory_limit setting, which causes PHP to set an internal flag that enables register_globals and allows attackers to exploit vulnerabilities in PHP applications that would otherwise be protected.

The memory_limit functionality in PHP 4.x up to 4.3.7, and 5.x up to 5.0.0RC3, under certain conditions such as when register_globals is enabled, allows remote attackers to execute arbitrary code by triggering a memory_limit abort during execution of the zend_hash_init function and overwriting a HashTable destructor pointer before the initialization of key data structures is complete.