login.php in ACal Calendar Project 2.2.5 allows remote attackers to bypass authentication by setting the ACalAuthenticate cookie variable to "inside".

Direct static code injection vulnerability in edit.php in ACal Calendar Project 2.2.5 allows authenticated users to execute arbitrary PHP code via (1) the edit=header value, which modifies header.php, or (2) the edit=footer value, which modifies footer.php. NOTE: this issue might be resultant from the poor authentication as identified by CVE-2006-0182. Since the design of the product allows the administrator to edit the code, perhaps this issue should not be included in CVE, except as a consequence of CVE-2006-0182.

PHP remote file inclusion vulnerability in day.php in ACal 2.2.6 allows remote attackers to execute arbitrary PHP code via a URL in the path parameter.