Invite codes in URL query parameters can leak through browsers and request metadata
Source references: 3The example creates links containing `?code=...` and reads the code directly from the page URL. Query strings commonly remain in browser history, copied text, proxy or server logs, and may be disclosed to other sites through the Referer header on later requests.
Someone who obtains a still-valid code could impersonate an invitee and submit an RSVP, corrupting the attendance list. The response is also associated with that code.
The example copies the invite code in a `?code=` query parameter and reads it from the page URL. If that code controls RSVP submission, anyone obtaining it through browser history, logs, or a later request carrying the full referring URL could submit or replace a response. The material does not state whether codes are single-use, redacted from logs, or protected by a restrictive referrer policy. Users can ask for short-lived single-use codes, URL cleanup after capture, log redaction, and referrer restrictions.
// Auto-populate invite code from URL useEffect(() => { const codeFromUrl = new URLSearchParams(window.location.search).get('code'); if (codeFromUrl) setInviteCode(codeFromUrl); }, []);Show 2 other places
<button onClick={() => generateInviteCode.mutate()}>Generate New Code</button> {unusedCodes.map(code => ( <div key={code.code}> <code>{code.code}</code> <button onClick={() => navigator.clipboard.writeText(`${window.location.origin}?code=${code.code}`)}> Copy Link </button> </div> <code>{code.code}</code> <button onClick={() => navigator.clipboard.writeText(`${window.location.origin}?code=${code.code}`)}> Copy Link </button> </div>