Incorrect Authorization Affecting @fastify/http-proxy package, versions <11.6.0
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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- published19 Jul 2026
- disclosed18 Jul 2026
- creditByunSuyoung
Introduced: 18 Jul 2026
NewCVE-2026-16117 (opens in a new tab)How to fix?
Upgrade @fastify/http-proxy to version 11.6.0 or higher.
Overview
@fastify/http-proxy is a proxy http requests, for Fastify
Affected versions of this package are vulnerable to Incorrect Authorization via the rewritePrefix param. An attacker can access restricted upstream paths by sending requests with URL-encoded characters in the prefix, bypassing intended path rewriting and potentially reaching internal or administrative endpoints.