GHSA-88F6-4RJV-X774 Vikunja: TOTP secret is readable after enrollment, no step-up auth

Summary Once a user has TOTP enabled, the API still hands back the raw shared secret to anyone holding that account's access token. Reading it doesn't ask for the password, even though disabling TOTP does. So a stolen token, an XSS, or a browser left open is enough to copy the second factor into...