The _expand_quoted_text function in libs/Smarty_Compiler.class.php in Smarty 2.6.20 before r2797 allows remote attackers to execute arbitrary PHP code via vectors related to templates and (1) a dollar-sign character, aka "php executed in templates;" and (2) a double quoted literal string, aka a "function injection security hole." NOTE: each vector affects slightly different SVN revisions.

The modifier.regex_replace.php plugin in Smarty before 2.6.19, as used by Serendipity (S9Y) and other products, allows attackers to call arbitrary PHP functions via templates, related to a '\0' character in a search string.

PHP remote file inclusion vulnerability in unit_test/test_cases.php in Smarty 2.6.1 allows remote attackers to execute arbitrary PHP code via a URL in the SMARTY_DIR parameter. NOTE: this issue is disputed by CVE and a third party because SMARTY_DIR is a constant

PHP remote file inclusion vulnerability in libs/Smarty.class.php in Smarty 2.6.9 allows remote attackers to execute arbitrary PHP code via a URL in the filename parameter. NOTE: in the original disclosure, filename is used in a function definition, so this report is probably incorrect

Unknown vulnerability in the regex_replace modifier (modifier.regex_replace.php) in Smarty before 2.6.8 allows attackers to execute arbitrary PHP code.