A Stored Cross Site Scripting (XSS) vulnerability in Celk Sistemas Celk Saude v.3.1.252.1 allows a remote attacker to store JavaScript code inside a PDF file through the file upload feature. When the file is rendered, the injected code is executed on the user's browser.
https://portswigger.net/web-security/cross-site-scripting/stored
https://github.com/gabriel-bri/vulnerability-research/tree/main/CVE-2024-55199