The vulnerability of the Python programming language’s HTTP client module allows attackers to inject arbitrary HTTP headers.

The vulnerability of the Python programming language’s HTTP client module is related to the failure to take measures to neutralize crlf sequences. Exploiting this vulnerability allows a remote attacker to inject arbitrary HTTP headers...

EulerOS 2.0 SP12 : python3 (EulerOS-SA-2026-2625)

According to the versions of the python3 packages installed, the EulerOS installation on the remote host is affected by the following vulnerabilities : User-controlled header names and values containing newlines can allow injecting HTTP headers.CVE-2026-0865 Tenable has extracted the preceding...

mint has potential CRLF injection in its HTTP request line via unvalidated `method`/`target`

Summary Mint's HTTP/1 request encoder splices the caller-supplied method and target directly into the request line without character validation. An application that forwards attacker-controlled input as the HTTP method or the target to Mint.HTTP.request/5 is exposed to request-line CRLF injection...

GHSA-2PG6-44CX-C49V mint has potential CRLF injection in its HTTP request line via unvalidated `method`/`target`

Summary Mint's HTTP/1 request encoder splices the caller-supplied method and target directly into the request line without character validation. An application that forwards attacker-controlled input as the HTTP method or the target to Mint.HTTP.request/5 is exposed to request-line CRLF injection...

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...

EUVD-2026-42669

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: 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...

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...

SUSE 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-2026-35210 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...

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...

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...

Exploit for Improper Handling of Case Sensitivity in Apache Camel

Case-Variant Camel Header Injection Reproducer CVE-2026-40453...

PT-2026-67269

Name of the Vulnerable Software and Affected Versions FreeRDP versions prior to 3.29.0 Description Insufficient validation of CRLF and control characters occurs in the server-controlled RDP redirection TargetNetAddress field. This value is assigned to the client's ServerHostname and is subsequent...

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...

Gakido vulnerable to HTTP Header Injection (CRLF Injection)

A vulnerability was discovered in Gakido that allowed HTTP Header Injection through CRLF Carriage Return Line Feed sequences in user-supplied header values and names.When making HTTP requests with user-controlled header values containing \r\n CRLF, \n LF, or \x00 null byte characters, an attacker...