PYSEC-2026-1400 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 attacke...

PYSEC-2026-1435 h2 allows HTTP Request Smuggling due to illegal characters in headers

Summary HTTP/2 request splitting vulnerability allows attackers to perform request smuggling attacks by injecting CRLF characters into headers. This occurs when servers downgrade HTTP/2 requests to HTTP/1.1 without properly validating header names/values, enabling attackers to manipulate request...

GHSA-8QCX-XF44-272X Django: DomainNameValidator permits newline characters that may enable HTTP header injection

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...

Django: DomainNameValidator permits newline characters that may enable HTTP header injection

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...

GO-2026-5829 Nezha Monitoring: OAuth2 Redirect URL — Host Header Injection in github.com/nezhahq/nezha

Nezha Monitoring: OAuth2 Redirect URL — Host Header Injection in github.com/nezhahq/nezha. NOTE: The source advisory for this report contains additional versions that could not be automatically mapped to standard Go module versions. If this is causing false-positive reports from vulnerability...

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...

PYSEC-2026-2092

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...

PYSEC-2026-2092

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. Djang...

UBUNTU-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

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...

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...

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...

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 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...

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

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...

PYSEC-2026-1055 Twisted vulnerable to NameVirtualHost Host header injection

When the host header does not match a configured host, twisted.web.vhost.NameVirtualHost will return a NoResource resource which renders the Host header unescaped into the 404 response allowing HTML and script injection. Example configuration: python from twisted.web.server import Site from...

GHSA-22G5-R2X5-97CX showdown allows stored cross-site scripting through table header ID injection

showdown contains a stored cross-site scripting vulnerability in the parseHeaders function of src/subParsers/makehtml/tables.js that fails to properly escape table header ID attributes. Attackers can inject arbitrary HTML and script-executing SVG elements through double-quote characters in markdo...