Exclude image/svg+xml from the frontend allowlist since SVG poses greater
XSS risk due to its ability to contain scripts, even with proper Content-Type
validation. The server-side validation (commit 8182870) still accepts SVG
and validates magic bytes, but the frontend restrict to safer bitmap formats
as specified in the issue.
Co-Authored-By: Paperclip <noreply@paperclip.ing>
Add ALLOWED_LOGO_TYPES allowlist check before constructing data URL from
user-controlled logoBase64 and logoMimeType fields. Only MIME types that
the API explicitly accepts (image/png, image/jpeg, image/gif, image/webp,
image/svg+xml) can be rendered as data URLs.
Co-Authored-By: Paperclip <noreply@paperclip.ing>
Defensive validation in /api/branding ensures base64-encoded logo content
matches its declared MIME type by checking image magic bytes (PNG, JPEG,
GIF, WebP). If the content doesn't match, the legacy base64 fields are
nulled out before returning to prevent MIME type confusion attacks.
Co-Authored-By: Paperclip <noreply@paperclip.ing>
The resolveStaffMiddleware auto-links on first API call when staff.user_id
IS NULL. Setting userId at seed time blocks this path since Better-Auth's
user.id is opaque and unknown pre-auth. Remove userId from all staff inserts
so the middleware can populate it on first authenticated call.
Co-Authored-By: Paperclip <noreply@paperclip.ing>
Add pre-submit validation in markPaid() that checks tip split percentages
sum to 100% before allowing the payment to be processed. This addresses
Finding #7 from the frontend code quality review (GRO-628).
Co-Authored-By: Paperclip <noreply@paperclip.ing>
Test User