CVE-2026-100664

A flaw was found in Netty's HTTP/3 codec. When converting HTTP/1 requests to HTTP/3, the codec improperly prioritizes the Host header over the request-target authority. A remote, unauthenticated attacker can exploit this authority confusion by sending a request containing conflicting destination...

CVE-2026-100663

A flaw was found in Netty's HTTP/3 codec netty-codec-http3. A remote attacker can bypass security policies and tunnel allowlists when Netty acts as an HTTP/1 to HTTP/3 proxy or gateway. Due to improper translation of HTTP/1 CONNECT requests, the component uses the attacker-controlled Host header ...

CVE-2026-100724

http4k Maven package org.http4k:http4k-core before 6.49.0.0, 5.42.0.0 and 4.51.0.0 uses substring Contains matching on the Host header by default in reverseProxy and reverseProxyRouting when dispatching to configured virtual hosts. If these functions are deployed as a public-facing inbound HTTP...

EUVD-2026-87855

http4k Maven package org.http4k:http4k-core before 6.49.0.0, 5.42.0.0 and 4.51.0.0 uses substring Contains matching on the Host header by default in reverseProxy and reverseProxyRouting when dispatching to configured virtual hosts. If these functions are deployed as a public-facing inbound HTTP...

urlbuster

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php_code_analysis

this script will scan your code the script can find 1. checkfileupload issues 2. hostheaderinjection 3. SQl injection 4. insecure deserialization 5. openredirect 6. SSRF 7. XSS 8. LFI 9. commandinjection features 1. fast 2. simple report usage: root@kitploit: python code.py file.php -this will sc...

CVE-2026-100664

Netty's HTTP/3 codec io.netty:netty-codec-http3 versions 4.2.2.Final through 4.2.17.Final builds the HTTP/3 :authority pseudo-header from the HTTP/1 Host header before considering the authority of an absolute-form HTTP/1 request-target. In HttpConversionUtil.toHttp3HeadersHttpMessage, boolean —...

EUVD-2026-87758

Netty's HTTP/3 codec io.netty:netty-codec-http3 versions 4.2.2.Final through 4.2.17.Final builds the HTTP/3 :authority pseudo-header from the HTTP/1 Host header before considering the authority of an absolute-form HTTP/1 request-target. In HttpConversionUtil.toHttp3HeadersHttpMessage, boolean —...

CVE-2026-100664 Netty 4.2.2 through 4.2.15 HTTP/1 Host Header Authority Confusion

Netty's HTTP/3 codec io.netty:netty-codec-http3 versions 4.2.2.Final through 4.2.17.Final builds the HTTP/3 :authority pseudo-header from the HTTP/1 Host header before considering the authority of an absolute-form HTTP/1 request-target. In HttpConversionUtil.toHttp3HeadersHttpMessage, boolean —...

EUVD-2026-87753

Netty's HTTP/3 codec io.netty:netty-codec-http3 in versions 4.2.0.Final through 4.2.17.Final does not enforce the RFC 9114 requirement that the :authority pseudo-header field and a literal host header field, when both present, carry the same value. A remote unauthenticated peer can send a single...

cloudfrunt

CloudFrunt CloudFrunt is a tool for identifying misconfigured CloudFront domains. Background CloudFront is a Content Delivery Network CDN provided by Amazon Web Services AWS. CloudFront users create "distributions" that serve content from specific sources an S3 bucket, for example. Each CloudFron...

Starlette - Improper Validation of Unsafe Equivalence in Input

A flaw was found in Starlette, a lightweight ASGI Asynchronous Server Gateway Interface framework. A remote attacker could exploit this vulnerability by sending a specially crafted HTTP Host request header. This malformed header could cause the request.url to be incorrectly reconstructed, leading...

Astro SSR - Server-Side Request Forgery

Astro before 5.17.3 and @astrojs/node before 9.5.4 are vulnerable to full-read SSRF due to improper Host header validation in error page rendering, allowing attackers to redirect requests and access internal resources. id: CVE-2026-25545 info: name: Astro SSR - Server-Side Request Forgery author:...

Plone Docker - Host Header Injection

Plone Docker Official Image 5.2.13 5221 is vulnerable to Host Header Injection due to improper validation of input by the HOST headers. This can lead to Cross-Site Scripting XSS attacks when the malicious Host header value is reflected in the response. id: CVE-2024-23055 info: name: Plone Docker ...

ExponentCMS <= 2.6 - Host Header Injection

An HTTP Host header attack exists in ExponentCMS 2.6 and below in /exponentconstants.php. A modified HTTP header can change links on the webpage to an arbitrary value,leading to a possible attack vector for MITM. id: CVE-2021-38751 info: name: ExponentCMS = 2.6 - Host Header Injection author:...

CVE-2026-48710

CVE-2026-48710 原理： Starletteはオープンソースの軽量なPython ASGIフレームワークです。 StarletteフレームワークがURLデータ構造の処理においてクライアントが送信したhostを信頼し、そのままurl変数に連結して後続の認証処理を行うことに起因します。 元のURLは uvicorn\protocols\http\httptoolsimpl.py で処理されます def onmessagebeginself - None: self.url = b"" self.expect100continue = False self.headers =...

XSSTracer

XSSTracer v1.3 作者: 1N3 @CrowdShield https://crowdshield.com XSSTracer は、リモートWebサーバーにおけるクリックジャッキング、クロスフレームスクリプティング、クロスサイトトレーシング、ホストヘッダーインジェクションを検査する小さなPythonスクリプトです。 root@kitploit: Usage: ./xsstracer...

CVE-2018-13257

Blackboard Learn CAS チケットホストヘッダースプーフィング Blackboard Learn 内の認証モジュールは、Central Authentication Service CAS の service ticket 検証中に HTTP ホストヘッダースプーフィングの影響を受けます。CAS サービスチケットは特定の service のみを対象としていますが、Blackboard Learn...

RCE

CVE-2022-31814 WebAppのバグ root@kitploit: import argparse import requests import time import sys import urllib.parse from requests.packages.urllib3.exceptions import InsecureRequestWarning requests.packages.urllib3.disablewarningsInsecureRequestWarning parser =...

pfBlockerNg-CVE-2022-40624

pfBlockerNg-CVE-2022-40624 背景 pfBlockerNG は、以下の機能を備えた pfBlocker の次世代版です。 1. IPv4/v6 リストソースを「拒否 Deny、許可 Permit、一致 Match」形式で管理します。 2. MaxMind Inc. による GeoIP データベース GeoLite2 無料版。 3. 重複排除 De-Duplication、抑止 Suppression、およびレピュテーション Reputation の拡張。 4. 多様なリスト形式からのダウンロード機能。 5. Proofpoint ET IQRisk IP...