CVE-2026-54665

Apache NiFi 0.0.1 through 2.9.0 support building qualified URLs from one of several HTTP request headers that provide an alternative to the standard Host header without validating the values provided. Apache NiFi 1.6.0 introduced a configurable application property to restrict values provided in...

CVE-2026-54665 Apache NiFi: Missing Validation for Proxy Host Headers

Apache NiFi 0.0.1 through 2.9.0 support building qualified URLs from one of several HTTP request headers that provide an alternative to the standard Host header without validating the values provided. Apache NiFi 1.6.0 introduced a configurable application property to restrict values provided in...

PT-2026-51429

Name of the Vulnerable Software and Affected Versions Gogs versions prior to 0.14.3 Description When ENABLE REVERSE PROXY AUTHENTICATION is enabled, Gogs accepts the configured authentication header default: X-WEBAUTH-USER directly from client requests without validating that the request originat...

ROS-20260622-73-0037

The vulnerability of the built-in reverse proxy server in the Go programming language is related to insufficient checking of requests on the server side. Exploiting this vulnerability allows a remote attacker to perform an SSRF attack...

Improper Authentication

Kirby is vulnerable to Improper Authentication. The vulnerability is due to incorrect trust of the Forwarded, X-Client-IP, and X-Real-IP request headers during local IP validation, which allows a remote attacker to bypass the installation restriction and create the first administrator account on...

http4k: `reverseProxy()` defaulted to substring (`Contains`) matching on `Host`; tightened to `Exact`

Impact reverseProxy and reverseProxyRouting matched configured vhosts by substring on the Host header Contains matcher by default. The intended use of these functions in http4k is outbound dispatch e.g. matching AWS service subdomains, per the Contains docstring and test-time composition of fake...

GHSA-JRPC-7VXP-69P6 http4k: `reverseProxy()` defaulted to substring (`Contains`) matching on `Host`; tightened to `Exact`

Impact reverseProxy and reverseProxyRouting matched configured vhosts by substring on the Host header Contains matcher by default. The intended use of these functions in http4k is outbound dispatch e.g. matching AWS service subdomains, per the Contains docstring and test-time composition of fake...

HTTP Request Smuggling

Overview Affected versions of this package are vulnerable to HTTP Request Smuggling in the reverseProxy process. An attacker can bypass routing-based authorization by sending a specially crafted Host header that matches a configured virtual host via substring, allowing unauthorized access to...

User Impersonation

Overview silverstripe/framework is a PHP framework forming the base for the SilverStripe CMS. Affected versions of this package are vulnerable to User Impersonation via insufficient validation of proxy-related HTTP headers. An attacker can spoof client IP addresses, hostnames, or protocols by...

PT-2026-53786

Impact reverseProxy and reverseProxyRouting matched configured vhosts by substring on the Host header Contains matcher by default. The intended use of these functions in http4k is outbound dispatch e.g. matching AWS service subdomains, per the Contains docstring and test-time composition of fake...

Kirby: External Initialization of the Panel on reverse proxy setups with the `Forwarded` header

TL;DR This vulnerability affects Kirby sites that have no configured user accounts and are running on publicly accessible servers behind a reverse proxy that sets the Forwarded: for=..., X-Client-IP, or X-Real-IP request header. It was possible to install the Panel = create the first admin user i...

External Initialization of Trusted Variables or Data Stores

Overview Affected versions of this package are vulnerable to External Initialization of Trusted Variables or Data Stores in the installation process when the Forwarded, X-Client-IP, or X-Real-IP headers are set by a reverse proxy. An attacker can gain unauthorized administrative access by remotel...

GHSA-WHXW-24JC-CWMV Kirby: External Initialization of the Panel on reverse proxy setups with the `Forwarded` header

TL;DR This vulnerability affects Kirby sites that have no configured user accounts and are running on publicly accessible servers behind a reverse proxy that sets the Forwarded: for=..., X-Client-IP, or X-Real-IP request header. It was possible to install the Panel = create the first admin user i...

Origin Validation Error

Overview Affected versions of this package are vulnerable to Origin Validation Error in the JWT validation process. An attacker can gain unauthorized access by presenting a validly signed token from a trusted issuer, originally intended for a different service, to the authentication system. This ...

Server-side Request Forgery (SSRF)

Overview Affected versions of this package are vulnerable to Server-side Request Forgery SSRF in the processing of user-supplied URLs in outgoing HTTP components, including notification channels, OIDC backchannel logout, and SAML metadata fetches. An attacker can access internal network resources...

PT-2026-50724

Name of the Vulnerable Software and Affected Versions Kirby versions prior to 4.9.4 Kirby versions prior to 5.4.4 Description An external initialization issue exists in the Kirby Panel and REST API. This occurs when a site has no configured user accounts and is hosted on a publicly accessible...

SwiftNIO HTTP/2: HTTP/2-to-HTTP/1 Request Smuggling via unvalidated :path pseudo-header in HTTP2ToHTTP1Codec

swift-nio-http2's HTTP/2-to-HTTP/1.1 codec HTTP2FramePayloadToHTTP1ServerCodec / HTTP2ToHTTP1ServerCodec did not validate pseudo-header values for control characters before placing them into the translated HTTP/1.1 message. A remote attacker could send an HTTP/2 request containing CR \r, LF \n, o...

Arc: Unauthenticated access to Go debug pprof endpoints leaks runtime state and enables CPU-burn DoS

Summary Arc registers Go's net/http/pprof handlers at /debug/pprof/ via app.Usepprof.New in internal/api/server.go, and /debug/pprof is added to PublicPrefixes in cmd/arc/main.go. The auth middleware short-circuits before the token check on prefix match, so the endpoints are reachable without any...

Use of GET Request Method With Sensitive Query Strings

Overview Affected versions of this package are vulnerable to Use of GET Request Method With Sensitive Query Strings in the handleOperatorCreateAPIKey process. An attacker can obtain sensitive API keys by accessing browser history, reverse-proxy logs, or Referer headers, which may expose the raw...

Use of GET Request Method With Sensitive Query Strings

Overview Affected versions of this package are vulnerable to Use of GET Request Method With Sensitive Query Strings in the handleOperatorCreateAPIKey process. An attacker can obtain sensitive API keys by accessing browser history, reverse-proxy logs, or Referer headers, which may expose the raw...