CVE-2026-18174 @fastify/forwarded vulnerable to improper input validation via unstripped tab characters in X-Forwarded-For

@fastify/forwarded resolves client addresses from the X-Forwarded-For header. In versions before 3.0.2, when the header contains two or more comma separated entries, the parser trims only space characters and does not strip horizontal tabs, even though RFC 7230 defines optional whitespace as both...

CVE-2026-18174

The CVE-2026-18174 entry concerns @fastify/forwarded. In versions before 3.0.2, the X-Forwarded-For parser trims only spaces when entries are comma-separated and does not strip horizontal tabs. As a result, an entry padded with a tab retains a literal tab in the resolved client IP string, potenti...

EUVD-2026-50332

@fastify/forwarded resolves client addresses from the X-Forwarded-For header. In versions before 3.0.2, when the header contains two or more comma separated entries, the parser trims only space characters and does not strip horizontal tabs, even though RFC 7230 defines optional whitespace as both...

CVE-2026-18174

@fastify/forwarded resolves client addresses from the X-Forwarded-For header. In versions before 3.0.2, when the header contains two or more comma separated entries, the parser trims only space characters and does not strip horizontal tabs, even though RFC 7230 defines optional whitespace as both...

CVE-2026-18174 @fastify/forwarded vulnerable to improper input validation via unstripped tab characters in X-Forwarded-For

@fastify/forwarded resolves client addresses from the X-Forwarded-For header. In versions before 3.0.2, when the header contains two or more comma separated entries, the parser trims only space characters and does not strip horizontal tabs, even though RFC 7230 defines optional whitespace as both...

CVE-2026-18174 @fastify/forwarded vulnerable to improper input validation via unstripped tab characters in X-Forwarded-For

@fastify/forwarded resolves client addresses from the X-Forwarded-For header. In versions before 3.0.2, when the header contains two or more comma separated entries, the parser trims only space characters and does not strip horizontal tabs, even though RFC 7230 defines optional whitespace as both...

PT-2026-65795

@fastify/forwarded resolves client addresses from the X-Forwarded-For header. In versions before 3.0.2, when the header contains two or more comma separated entries, the parser trims only space characters and does not strip horizontal tabs, even though RFC 7230 defines optional whitespace as both...

CVE-2026-18174: Improper Input Validation

@fastify/forwarded resolves client addresses from the X-Forwarded-For header. In versions before 3.0.2, when the header contains two or more comma separated entries, the parser trims only space characters and does not strip horizontal tabs, even though RFC 7230 defines optional whitespace as both...

CVE-2026-49332

A flaw was found in openshift/oauth-proxy. The proxy sets authenticated identity headers using only dash-variant keys X-Forwarded-User but does not strip underscore-variant keys XForwardedUser from incoming requests. WSGI and PHP frameworks normalize both variants to the same variable, allowing a...

CVE-2026-49332

A flaw was found in openshift/oauth-proxy. The proxy sets authenticated identity headers using only dash-variant keys X-Forwarded-User but does not strip underscore-variant keys XForwardedUser from incoming requests. WSGI and PHP frameworks normalize both variants to the same variable, allowing a...

Open Redirect in Host Authorization Middleware Detection

Specially crafted "X-Forwarded-Host" headers in combination with certain "allowed host" formats can cause the Host Authorization middleware in Action Pack to redirect users to a malicious website. !/usr/bin/env python3 -- coding: utf-8 -- """Specially crafted "X-Forwarded-Host" headers in...

CVE-2026-59897

A flaw was found in Hono, a web application framework. The AWS API Gateway v1 adapter incorrectly de-duplicates repeated request header values using a substring comparison, rather than an exact match. This can lead to incomplete data being received by middleware or application logic that relies o...

PT-2026-65653

Summary openhole-server forwarded the URL-decoded request path r.URL.Path to tunnel clients instead of the original request-target. Percent-encoded dot-segments %2e and separators %2f were decoded to ../ and / before reaching the local service. Go's ServeMux rejects literal ../ paths, but...

CVE-2026-14899

A flaw was found in Thunderbird. The Mozilla Foundation's Security Advisory describes the following issue: The code to parse MIME headers for display when forwarding a message if the setting to view all headers was enabled had an off-by-one error, allowing a single byte to be read from the memory...

Linux Distros Unpatched Vulnerability : CVE-2026-63771

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - Adminer before 5.4.3 contains a cookie injection vulnerability that allows attackers to manipulate cookie attributes by injecting arbitrary values through the...

GO-2026-5777 Chi's RealIP Middleware allows IP spoofing via unvalidated X-Forwarded-For header in github.com/go-chi/chi

Chi's RealIP Middleware allows IP spoofing via unvalidated X-Forwarded-For header in github.com/go-chi/chi...

GO-2026-5775 Chi Middleware vulnerable to IP spoofing via X-Forwarded-For header in github.com/go-chi/chi

Chi Middleware vulnerable to IP spoofing via X-Forwarded-For header in github.com/go-chi/chi...

CVE-2026-54764

A flaw was found in Traefik, an HTTP reverse proxy and load balancer. The ForwardAuth middleware, even when configured to not trust forwarded headers, incorrectly uses the original incoming request to determine the X-Forwarded-Port header sent to the authentication service. This allows an...

User Impersonation

Overview zenml is a ZenML: Write production-ready ML code. Affected versions of this package are vulnerable to User Impersonation in the POST /api/v1/login and self password-change endpoints when the rate limiter uses request.client.host derived from the X-Forwarded-For header. An attacker can...

CVE-2026-11922

A vulnerability in zenml-io/zenml versions 0.57.0 through 0.94.2 allows an attacker to bypass rate-limiting on the POST /api/v1/login and self password-change endpoints by rotating the X-Forwarded-For header. The rate limiter keys requests by request.client.host, which is derived from the...