Sourcecodester Online Medicine Ordering System 1.0 is vulnerable to Incorrect Access Control. There is a lack of authorization checks for admin operations. Specifically, an attacker can perform admin-level actions without possessing a valid session token. The application does not verify whether the user is logged in as an admin or even check for a session token at all.
https://github.com/bunyamindemir/vulnerability-disclosures/blob/main/omos-authorization-bypass.md