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Project Pier 0.8.8 and earlier contains an unauthenticated arbitrary file upload vulnerability in tools/upload_file.php. The upload handler fails to validate the file type or enforce authentication, allowing remote attackers to upload malicious PHP files directly into a web-accessible directory. The uploaded file is stored with a predictable suffix and can be executed by requesting its URL, resulting in remote code execution.
Reserved 2025-08-07 | Published 2025-08-08 | Updated 2025-08-08 | Assigner VulnCheckCWE-434 Unrestricted Upload of File with Dangerous Type
BlackHawk
sinn3r
raw.githubusercontent.com/...bapp/projectpier_upload_exec.rb
www.exploit-db.com/exploits/21929
packetstorm.news/files/id/117070
web.archive.org/...0120111090432/http://www.projectpier.org/
www.opensourcecms.com/projectpier/
www.vulncheck.com/.../project-pier-arbitrary-file-upload-rce
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