CVE-2026-27125: Improperly Controlled Modification of Dynamically-Determined Object Attributes

svelte performance oriented web framework. Prior to 5.51.5, in server-side rendering, attribute spreading on elements e.g. enumerates inherited properties from the object's prototype chain rather than only own properties. In environments where Object.prototype has already been polluted — a...

GHSA-CRPF-4HRX-3JRP Svelte SSR attribute spreading includes inherited properties from prototype chain

In server-side rendering, attribute spreading on elements e.g. enumerates inherited properties from the object's prototype chain rather than only own properties. In environments where Object.prototype has already been polluted — a precondition outside of Svelte's control — this can cause unexpect...