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:...

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:...

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 ...

Ruby on Rails - Open Redirect via Host Header Injection

Ruby on Rails action pack before 6.1.2.1, 6.0.3.5 contains an open redirect caused by special crafted Host headers in combination with allowed host formats, letting attackers redirect users to malicious websites, exploit requires attacker to control Host headers. id: CVE-2021-22881 info: name: Ru...

dsh2shell

dsh2shell Unauthenticated RCE PoC for expo...

CVE-2026-77087

Paperclip before 0.3.1 in default localtrusted mode fails to validate Host headers, allowing attackers to execute arbitrary commands via DNS rebinding. An attacker can craft a malicious webpage that, when visited by a developer running Paperclip locally, uses DNS rebinding to make authenticated A...

EUVD-2026-63991

Paperclip before 0.3.1 in default localtrusted mode fails to validate Host headers, allowing attackers to execute arbitrary commands via DNS rebinding. An attacker can craft a malicious webpage that, when visited by a developer running Paperclip locally, uses DNS rebinding to make authenticated A...

CVE-2026-77087 Paperclip before 0.3.1 Remote Code Execution via DNS Rebinding

Paperclip before 0.3.1 in default localtrusted mode fails to validate Host headers, allowing attackers to execute arbitrary commands via DNS rebinding. An attacker can craft a malicious webpage that, when visited by a developer running Paperclip locally, uses DNS rebinding to make authenticated A...

CVE-2026-77087

Paperclip before 0.3.1 running in its default local_trusted mode fails to validate Host headers , enabling DNS rebinding attacks. An attacker can craft a malicious webpage that, when visited by a developer with Paperclip running locally, makes authenticated API requests and executes arbitrary com...

Laravel Backpack CRUD: OS command injection in Stats::makeCurlRequest via attacker-controlled Host header (pre-auth)

Summary Backpack\CRUD\Stats::makeCurlRequest builds a shell command using unescaped input that originates from the HTTP Host header, then passes it to exec. A specially crafted Host header can break out of the shell argument and cause the server to execute arbitrary OS commands as the web user. T...

Pipelines-as-Code GitHub App token request can be redirected via untrusted Enterprise Host header

Impact Pipelines-as-Code installations using the GitHub App provider are vulnerable to GitHub App credential exfiltration through the webhook endpoint. Affected versions accepted the X-GitHub-Enterprise-Host request header as the GitHub Enterprise API host during GitHub App token generation. For...

Linux Distros Unpatched Vulnerability : CVE-2026-61666

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - websocket-driver is a WebSocket protocol handler with pluggable I/O. Prior to 0.8.2, WebSocket::Driver.server passes a malformed Host header to URI.parse in...

CVE-2026-61666 websocket-driver: Denial of service via malformed Host header

websocket-driver is a WebSocket protocol handler with pluggable I/O. Prior to 0.8.2, WebSocket::Driver.server passes a malformed Host header to URI.parse in lib/websocket/http/request.rb without catching URI::InvalidURIError, allowing a remote client to crash a TCP-backed WebSocket server when th...

CVE-2026-61666 websocket-driver: Denial of service via malformed Host header

websocket-driver is a WebSocket protocol handler with pluggable I/O. Prior to 0.8.2, WebSocket::Driver.server passes a malformed Host header to URI.parse in lib/websocket/http/request.rb without catching URI::InvalidURIError, allowing a remote client to crash a TCP-backed WebSocket server when th...

CVE-2026-61666 websocket-driver: Denial of service via malformed Host header

websocket-driver is a WebSocket protocol handler with pluggable I/O. Prior to 0.8.2, WebSocket::Driver.server passes a malformed Host header to URI.parse in lib/websocket/http/request.rb without catching URI::InvalidURIError, allowing a remote client to crash a TCP-backed WebSocket server when th...

CVE-2026-61666

websocket-driver is a WebSocket protocol handler with pluggable I/O. Prior to 0.8.2, WebSocket::Driver.server passes a malformed Host header to URI.parse in lib/websocket/http/request.rb without catching URI::InvalidURIError, allowing a remote client to crash a TCP-backed WebSocket server when th...

CVE-2026-61666

CVE-2026-61666 affects the Ruby gem websocket-driver (a WebSocket protocol handler with pluggable I/O). In versions prior to 0.8.2 , WebSocket::Driver.server() passes a malformed Host header to URI.parse in lib/websocket/http/request.rb without catching URI::InvalidURIError. A remote client can e...

CVE-2026-15689

Dancer2::Plugin::Auth::Extensible versions through 0.713 for Perl allow password reset link poisoning via the request Host header in defaultemailpasswordreset and defaultwelcomesend. Both default emails emit a link of the form $base/login/$code, whose authority comes from the request Host header,...

CVE-2026-15689 Dancer2::Plugin::Auth::Extensible versions through 0.713 for Perl allow password reset link poisoning via the request Host header in _default_email_password_reset and _default_welcome_send

Dancer2::Plugin::Auth::Extensible versions through 0.713 for Perl allow password reset link poisoning via the request Host header in defaultemailpasswordreset and defaultwelcomesend. Both default emails emit a link of the form $base/login/$code, whose authority comes from the request Host header,...