Coolify is an open-source and self-hostable tool for managing servers, applications, and databases. Prior to 4.0.0-beta.474, POST /api/feedback has no authentication, no rate limiting, and no input validation, allowing arbitrary content to be forwarded directly to a Discord webhook and enabling spam, content injection, and webhook abuse. This issue is fixed in version 4.0.0-beta.474.
https://github.com/coollabsio/coolify/security/advisories/GHSA-v64c-v633-58xp
https://github.com/coollabsio/coolify/pull/9653
https://github.com/coollabsio/coolify/commit/371e883c75a87d82c398bf89ee8ad6387348520d