fuomag9
75044c8d9b
fix: harden security post-review (JWT exposure, rate limiter, token expiry, timing)
- Raw JWT never sent to browser: page.tsx uses peekLinkingToken (read-only),
client sends opaque linkingId, API calls retrieveLinkingToken server-side
- link-account rate limiter now uses isRateLimited/registerFailedAttempt/
resetAttempts correctly (count only failures, reset on success)
- linking_tokens gains expiresAt column (indexed) + opportunistic expiry
purge on insert to prevent unbounded table growth
- secureTokenCompare fixed: pad+slice to expected length so timing is
constant regardless of submitted token length (no length leak)
- autoLinkOAuth uses config.oauth.allowAutoLinking (boolean) instead of
process.env truthy check that mishandles OAUTH_ALLOW_AUTO_LINKING=false
- Add Permissions-Policy header; restore X-Frame-Options for legacy UAs
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>