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An issue was discovered in CMS Made Simple 2.2.8. It is possible to achieve unauthenticated path traversal in the CGExtensions module (in the file action.setdefaulttemplate.php) with the m1_filename parameter; and through the action.showmessage.php file, it is workable to read arbitrary file content (by using that path traversal with m1_prefname set to cg_errormsg and m1_resettodefault=1). (CVSS:0.0) (Concluding Update:2021-09-17)

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