CVE-2026-49208 Symfony UX: Format-less date LiveProps parsed with the permissive DateTime constructor

Symfony UX is a JavaScript ecosystem for Symfony. From 2.8.0 until 2.36.0 and 3.1.0, when a LiveProp is typed as DateTimeInterface and no explicit format is configured, Symfony\UX\LiveComponent\LiveComponentHydrator::hydrateObjectValue falls back to new $className$value, allowing client-supplied...

Improper Validation of Unsafe Equivalence in Input

Overview symfony/ux-live-component is a Live components for Symfony Affected versions of this package are vulnerable to Improper Validation of Unsafe Equivalence in Input via hydration of writable LiveProp properties typed as DateTimeInterface. An attacker can manipulate time-based application...