PHP remote file inclusion vulnerability in classes/core/language.php in LimeSurvey 1.5.2 and earlier allows remote attackers to execute arbitrary PHP code via a URL in the rootdir parameter.
Improper Control of Generation of Code The product constructs all or part of a code segment using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the syntax or behavior of the intended code segment.