CVE-2026-16117

Impact: @fastify/http-proxy versions up to and including 11.5.0 fail to rewrite the request prefix when the prefix segment is URL-encoded. Fastify's router URL-decodes paths for route matching, but request.url retains the original encoded form, and the prefix-rewrite step uses a literal string...

CVE-2026-15631

Impact: @fastify/http-proxy versions from 9.4.0 up to and including 11.5.0 fail to validate the resolved WebSocket destination path against the configured rewrite prefix. The WebSocket routing path in WebSocketProxy.findUpstream resolves the destination via the WHATWG URL constructor, which...

CVE-2026-16117

The CVE concerns @fastify/http-proxy (affected: up to 11.5.0) where URL prefix rewriting fails when the prefix segment is URL-encoded. Fastify decodes paths for route matching, but request.url keeps the original encoded form. The prefixRewrite step compares against the decoded prefix using a lite...

EUVD-2026-45375

Impact: @fastify/http-proxy versions from 9.4.0 up to and including 11.5.0 fail to validate the resolved WebSocket destination path against the configured rewrite prefix. The WebSocket routing path in WebSocketProxy.findUpstream resolves the destination via the WHATWG URL constructor, which...

CVE-2026-15631

Impact: @fastify/http-proxy versions from 9.4.0 up to and including 11.5.0 fail to validate the resolved WebSocket destination path against the configured rewrite prefix. The WebSocket routing path in WebSocketProxy.findUpstream resolves the destination via the WHATWG URL constructor, which...

CVE-2026-15631

Summary (supported by provided sources): The CVE-2026-15631 issue affects @fastify/http-proxy versions 9.4.0 to 11.5.0, where the WebSocket routing logic in WebSocketProxy.findUpstream validates the destination path against the rewrite prefix but relies on the WHATWG URL constructor, which collap...

PT-2026-60961

Name of the Vulnerable Software and Affected Versions @fastify/http-proxy versions prior to 11.6.0 Description An improper input normalization issue exists where the software fails to rewrite the request prefix when the prefix segment is URL-encoded. While the router URL-decodes paths for route...