CVE-2026-49209

The CVE-2026-49209 issue affects Symfony UX LiveComponent’s BatchActionController::__invoke(), which iterates over client-supplied actions and issues a full HttpKernel sub-request per entry. With unbounded action arrays, an authenticated attacker can submit a single _batch request containing thou...

Allocation of Resources Without Limits or Throttling

Overview symfony/ux-live-component is a Live components for Symfony Affected versions of this package are vulnerable to Allocation of Resources Without Limits or Throttling via unbounded processing of client-supplied actions in BatchActionController::invoke. An attacker can cause denial of servic...