CVE-2026-71206 [HIGH] – Shiori’s CheckToken function (internal/domains/auth.go) validates only the JWT’s HMAC sign

Shiori’s CheckToken function (internal/domains/auth.go) validates only the JWT’s HMAC signature and returns the embedded claims.Account object unmodified, never re-fetching the account from the database. No session store or token-revocation mechanism exists in the codebase.