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:...

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...

CVE-2026-15155

The Essential Addons for Elementor – Popular Elementor Templates & Widgets plugin for WordPress is vulnerable to Authenticated Account Takeover via Email Header Injection in all versions up to, and including, 6.6.10 This is due to insufficient server-side validation of a Login/Register widget...

EUVD-2026-43160

The Essential Addons for Elementor – Popular Elementor Templates & Widgets plugin for WordPress is vulnerable to Authenticated Account Takeover via Email Header Injection in all versions up to, and including, 6.6.10 This is due to insufficient server-side validation of a Login/Register widget...

CVE-2026-15155

The CVE-2026-15155 entry concerns the WordPress plugin Essential Addons for Elementor (

PT-2026-57416

Name of the Vulnerable Software and Affected Versions The Essential Addons for Elementor versions prior to 6.6.11 Description Insufficient server-side validation of a Login/Register widget setting allows authenticated attackers with Contributor-level access or higher to perform Email Header...

CVE-2026-53878

A flaw was found in Django. django.core.validators.DomainNameValidator accepted newline characters in domain name input. When applications use this validator outside Django form fields and include the validated value in HTTP response headers, a remote attacker could perform HTTP header injection...

EUVD-2026-34012

Tesla vulnerable to multipart part smuggling via unescaped content-disposition values...

EUVD-2026-34016

Tesla has CRLF injection in request Content-Type header via addcontenttypeparam...

CVE-2026-50188

Kirby is an open-source content management system. Prior to 4.9.4 and 5.4.4, Kirby sites and plugins using the Kirby Http Remote class, including Remote::request, Remote::get, and Remote::post, to send outgoing HTTP requests with untrusted data in the headers option could allow newline characters...

CVE-2026-50188 Kirby: Request header injection in `Http\Remote`

Kirby is an open-source content management system. Prior to 4.9.4 and 5.4.4, Kirby sites and plugins using the Kirby Http Remote class, including Remote::request, Remote::get, and Remote::post, to send outgoing HTTP requests with untrusted data in the headers option could allow newline characters...

CVE-2026-50188

Kirby CMS is affected in versions prior to 4.9.4 and 5.4.4 where the Kirby\Http\Remote class (Remote::request/Remote::get/Remote::post) can be given untrusted header data. The issue stems from newline characters in header values being passed to the underlying HTTP request, allowing injection of a...

CVE-2026-50188

Kirby is an open-source content management system. Prior to 4.9.4 and 5.4.4, Kirby sites and plugins using the Kirby Http Remote class, including Remote::request, Remote::get, and Remote::post, to send outgoing HTTP requests with untrusted data in the headers option could allow newline characters...

netty: io.netty/netty-handler-proxy: Netty: HTTP Header Injection via HttpProxyHandler Disabled Validation

A flaw was found in Netty. The HttpProxyHandler component, which handles HTTP CONNECT requests, does not properly validate user-provided outbound headers. This allows an attacker to inject arbitrary HTTP headers into the CONNECT request sent to the proxy server. This could lead to unexpected...

CVE-2026-35210 OpenCTI: Authorization Bypass via `synchronized-upsert` HTTP Header Injection

OpenCTI is an open source platform for managing cyber threat intelligence knowledge and observables. Prior to 7.260326.0, an authorization bypass vulnerability in OpenCTI allows any authenticated user with KNOWLEDGEKNUPDATE permission to bypass Confidence Level validation and Object Marking...

Improper Neutralization

Overview Django is a high-level Python Web framework that encourages rapid development and clean, pragmatic design. Affected versions of this package are vulnerable to Improper Neutralization via the DomainNameValidator process. An attacker can inject arbitrary HTTP headers by submitting input...

CVE-2026-53878

An issue was discovered in Django 6.0 before 6.0.7 and 5.2 before 5.2.16. DomainNameValidator does not prohibit newlines in domain names unless used via a form field, since CharField strips newlines. If an application uses values with newlines in an HTTP response, header injection can occur. Djan...

CVE-2026-53878 Header injection possibility since DomainNameValidator accepted newlines in input

An issue was discovered in Django 6.0 before 6.0.7 and 5.2 before 5.2.16. DomainNameValidator does not prohibit newlines in domain names unless used via a form field, since CharField strips newlines. If an application uses values with newlines in an HTTP response, header injection can occur. Djan...

EUVD-2026-42045

An issue was discovered in Django 6.0 before 6.0.7 and 5.2 before 5.2.16. DomainNameValidator does not prohibit newlines in domain names unless used via a form field, since CharField strips newlines. If an application uses values with newlines in an HTTP response, header injection can occur. Djan...

CVE-2026-53878

CVE-2026-53878 affects Django 6.0 before 6.0.7 and 5.2 before 5.2.16. The issue lies in DomainNameValidator not prohibiting newlines in domain names, which can enable header injection if an application places such values in an HTTP response. Django itself remains unaffected because HttpResponse b...