CVE-2026-71209: Improper Limitation of a Pathname to a Restricted Directory

audiobookshelf's authentication-exemption check server/routers/Auth.js matches unauthenticated-allowed GET routes against req.path via a regex requiring a literal /items/:id/cover or /authors/:id/image shape, where req.path retains %2F sequences URL-encoded. CacheManager.handleCoverCache then joi...