PHPIDS before 20070703 does not properly handle use of the substr method in (1) document.location.search and (2) document.referrer; (3) certain use of document.location.hash; (4) certain "window[eval" and similar expressions; (5) certain Function expressions; (6) certain '=' expressions, as demonstrated by a 'whatever="something"' sequence; and (7) certain "with" expressions, which allows remote attackers to inject arbitrary web script.
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