Directory Traversal

Overview @fastify/http-proxy is a proxy http requests, for Fastify Affected versions of this package are vulnerable to Directory Traversal via the WebSocket routing. An attacker can access unintended upstream endpoints by sending crafted WebSocket upgrade requests containing path traversal...

@agentspec/claude-plugin (>=0.1.0, <=0.2.0), @agentspec/sidecar (0.1.0) +87 more potentially affected by CVE-2021-21322 +1 more via @fastify/http-proxy (>=9.4.0, <=11.5.0)

@fastify/http-proxy NPM version =9.4.0, =0.1.0, =1.0.19, =2.1.22, =0.1.1, =0.1.0, =0.0.4, =0.0.4, =6.0.0-canary.2685, =0.0.4, =0.0.4, =4.0.0-canary.13864, =4.0.0-canary.13864, =0.0.4, =9.0.0-canary.1784 and more Source cves: CVE-2021-21322, CVE-2026-15631 Source advisory:...

Incorrect Authorization

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...

@cedarjs/api-server (>=1.0.0-canary.12281, <=9.0.0-canary.1784), @cedarjs/cli (>=1.0.0-canary.12281, <=9.0.0-canary.1784) +40 more potentially affected by CVE-2026-16117 via @fastify/http-proxy (>=11.1.2, <=11.5.0)

@fastify/http-proxy NPM version =11.1.2, =1.0.0-canary.12281, =1.0.0-canary.12281, =6.0.0-canary.2685, =1.0.0-canary.12281, =1.0.0-canary.12281, =4.0.0-canary.13864, =4.0.0-canary.13864, =1.0.0-canary.12281, =3.0.0-alpha-1, =0.0.4, =0.3.0, =0.1.0, =1.0.1, =1.0.14 and more Source cves:...

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-2026-16117 @fastify/http-proxy vulnerable to prefix escape via URL-encoded characters

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-2026-16117

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-2026-16117 @fastify/http-proxy vulnerable to prefix escape via URL-encoded characters

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-2026-16117

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...

CVE-2026-16117 @fastify/http-proxy vulnerable to prefix escape via URL-encoded characters

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...

@agentspec/claude-plugin (>=0.1.0, <=0.2.0), @agentspec/sidecar (0.1.0) +108 more potentially affected by CVE-2026-16117 via @fastify/http-proxy (>=7.1.0, <=11.5.0)

@fastify/http-proxy NPM version =7.1.0, =0.1.0, =0.0.2, =1.0.19, =2.1.22, =0.1.1, =0.1.0, =0.0.4, =0.0.4, =6.0.0-canary.2685, =0.0.4, =0.0.4, =4.0.0-canary.13864, =4.0.0-canary.13864, =6.0.0-canary.2746 and more Source cves: CVE-2026-16117 Source advisory: MEND:CVE-2026-16117...

EUVD-2026-45379

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

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...

@agentspec/claude-plugin (>=0.1.0, <=0.2.0), @agentspec/sidecar (0.1.0) +87 more potentially affected by CVE-2026-15631 via @fastify/http-proxy (>=9.4.0, <=11.5.0)

@fastify/http-proxy NPM version =9.4.0, =0.1.0, =1.0.19, =2.1.22, =0.1.1, =0.1.0, =0.0.4, =0.0.4, =6.0.0-canary.2685, =0.0.4, =0.0.4, =4.0.0-canary.13864, =4.0.0-canary.13864, =0.0.4, =9.0.0-canary.1784 and more Source cves: CVE-2026-15631 Source advisory: MEND:CVE-2026-15631...

CVE-2026-15631 @fastify/http-proxy vulnerable to prefix escape via WebSocket path traversal

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 @fastify/http-proxy vulnerable to prefix escape via WebSocket path traversal

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 @fastify/http-proxy vulnerable to prefix escape via WebSocket path traversal

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...

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...

MGASA-2026-0257 Updated nodejs packages fix security vulnerabilities

lib,test: redact proxy credentials in tunnel errors. CVE-2026-48615 permission: handle process.chdir on writereport. CVE-2026-48617 tls: normalize hostname for server identity checks. CVE-2026-48618 http2: cap originSet size to prevent unbounded memory growth. CVE-2026-48619 tls: fix case-sensiti...

Updated nodejs packages fix security vulnerabilities

lib,test: redact proxy credentials in tunnel errors. CVE-2026-48615 permission: handle process.chdir on writereport. CVE-2026-48617 tls: normalize hostname for server identity checks. CVE-2026-48618 http2: cap originSet size to prevent unbounded memory growth. CVE-2026-48619 tls: fix case-sensiti...