CVE-2025-15265

A flaw was found in Svelte. A remote attacker can exploit this Cross-Site Scripting XSS vulnerability during asynchronous hydration by providing specially crafted input. This input, when processed, allows for the injection of arbitrary JavaScript into a user's browser due to improper escaping of...

CVE-2025-15265 Svelte 5.46.0 - Hydratable Key Script-Breakout XSS (SSR)

An SSR XSS exists in async hydration when attacker‑controlled keys are passed to hydratable. The key is embedded inside a block without HTML‑safe escaping, allowing to terminate the script and inject arbitrary JavaScript. This enables remote script execution in users' browsers, with potential for...