GHSA-38HQ-7X33-PHP4 @backstage/plugin-auth-backend: Unauthenticated OAuth account takeover via `redirect_uri` allowlist bypass

Impact The allowlist matching used by the experimental dynamic client registration and client ID metadata document CIMD features in @backstage/plugin-auth-backend matched glob patterns against the full URL string. A wildcard could therefore match across URL component boundaries: a pattern such as...