PHP remote file inclusion vulnerability in public/patch/patch.php in Project Pier 0.8.8 and earlier allows remote attackers to execute arbitrary commands or SQL statements via the id parameter.
Unrestricted file upload vulnerability in the Files plugin in ProjectPier 0.88 and earlier allows remote authenticated users to execute arbitrary PHP code by uploading a file with an executable extension, then accessing it via a direct request to the file in the tmp directory under the document root.
Multiple cross-site scripting (XSS) vulnerabilities in Project-Pier ProjectPier-Core allow remote attackers to inject arbitrary web script or HTML via the search_for parameter to (1) search_by_tag.php, (2) search_contacts.php, or (3) search.php.