CVE-2026-118659 | capricorn86 Happy DOM up to 21.0.1 ServerRendererServer ServerRendererServer.ts onIncomingRequest :path path traversal

October 28, 2026 Yanac

A vulnerability was found in capricorn86 Happy DOM up to 21.0.1. It has been declared as problematic. This affects the function onIncomingRequest of the file packages/@happy-dom/server-renderer/src/ServerRendererServer.ts of the component ServerRendererServer. Such manipulation of the argument :path leads to relative path traversal.

This vulnerability is referenced as CVE-2026-118659. It is possible to launch the attack remotely. No exploit is available.

It is recommended to upgrade the affected component.VulDB Recent EntriesRead More