CVE-2026-3902 ASGI header spoofing via underscore/hyphen conflation

An issue was discovered in 6.0 before 6.0.4, 5.2 before 5.2.13, and 4.2 before 4.2.30. ASGIRequest allows a remote attacker to spoof headers by exploiting an ambiguous mapping of two header variants with hyphens or with underscores to a single version with underscores. Earlier, unsupported Django...

CVE-2026-3902 ASGI header spoofing via underscore/hyphen conflation

An issue was discovered in 6.0 before 6.0.4, 5.2 before 5.2.13, and 4.2 before 4.2.30. ASGIRequest allows a remote attacker to spoof headers by exploiting an ambiguous mapping of two header variants with hyphens or with underscores to a single version with underscores. Earlier, unsupported Django...

CVE-2026-3902 ASGI header spoofing via underscore/hyphen conflation

An issue was discovered in 6.0 before 6.0.4, 5.2 before 5.2.13, and 4.2 before 4.2.30. ASGIRequest allows a remote attacker to spoof headers by exploiting an ambiguous mapping of two header variants with hyphens or with underscores to a single version with underscores. Earlier, unsupported Django...

CVE-2026-3902

CVE-2026-3902 affects Django: vulnerable in 6.0 before 6.0.4, 5.2 before 5.2.13, and 4.2 before 4.2.30. The flaw in ASGIRequest allows a remote attacker to spoof headers by conflating hyphen and underscore variants, via an ambiguous header mapping. Exploitation status is not provided in the sourc...

CVE-2026-3902

An issue was discovered in 6.0 before 6.0.4, 5.2 before 5.2.13, and 4.2 before 4.2.30. ASGIRequest allows a remote attacker to spoof headers by exploiting an ambiguous mapping of two header variants with hyphens or with underscores to a single version with underscores. Earlier, unsupported Django...

CVE-2026-3902

An issue was discovered in 6.0 before 6.0.4, 5.2 before 5.2.13, and 4.2 before 4.2.30. ASGIRequest allows a remote attacker to spoof headers by exploiting an ambiguous mapping of two header variants with hyphens or with underscores to a single version with underscores. Earlier, unsupported Django...

UBUNTU-CVE-2026-3902

An issue was discovered in 6.0 before 6.0.4, 5.2 before 5.2.13, and 4.2 before 4.2.30. ASGIRequest allows a remote attacker to spoof headers by exploiting an ambiguous mapping of two header variants with hyphens or with underscores to a single version with underscores. Earlier, unsupported Django...

CVE-2026-3902

An issue was discovered in 6.0 before 6.0.4, 5.2 before 5.2.13, and 4.2 before 4.2.30. ASGIRequest allows a remote attacker to spoof headers by exploiting an ambiguous mapping of two header variants with hyphens or with underscores to a single version with underscores. Earlier, unsupported Django...

PT-2026-30867

Name of the Vulnerable Software and Affected Versions Django versions 6.0 through 6.0.3, 5.2 through 5.2.12, and 4.2 through 4.2.29 Description The ASGIRequest component allows a remote attacker to spoof headers due to an ambiguous mapping of header variants with hyphens or with underscores to a...

FortiClient EMS 7.4.6 Vulnerability Assessment Tool

CVE-2026-35616 is a pre-authentication API bypass in FortiClient EMS 7.4.5 and 7.4.6 that allows remote, unauthenticated attackers to bypass certificate-based authentication through HTTP header spoofing. The Django application trusts user-controllable HTTP headers X-SSL-CLIENT-VERIFY,...

Exploit for Improper Access Control in Fortinet Forticlientems

CVE-2026-35616 Vulnerability Assessment Tool Safely detect wh...

GHSA-CXJ8-GGF2-P57C Signal K Server: OAuth Authorization Code Theft via Unvalidated Host Header in OIDC Flow

Summary SignalK Server contains a code-level vulnerability in its OIDC login and logout handlers where the unvalidated HTTP Host header is used to construct the OAuth2 redirecturi. Because the redirectUri configuration is silently unset by default, an attacker spoof the Host header to steal OAuth...

Signal K Server: OAuth Authorization Code Theft via Unvalidated Host Header in OIDC Flow

Summary SignalK Server contains a code-level vulnerability in its OIDC login and logout handlers where the unvalidated HTTP Host header is used to construct the OAuth2 redirecturi. Because the redirectUri configuration is silently unset by default, an attacker spoof the Host header to steal OAuth...

curl: CRLF Injection in HAProxy PROXY Protocol via CURLOPT_HAPROXY_CLIENT_IP allows IP spoofing and protocol injection

Summary: CURLOPTHAPROXYCLIENTIP introduced in curl 8.2.0 accepts arbitrary strings without any validation or sanitization before injecting them into the HAProxy PROXY protocol v1 header. An attacker who can influence the value passed to this option e.g., through a web application that proxies...

SUSE CVE-2026-29794

Vikunja is an open-source self-hosted task management platform. Starting in version 0.8 and prior to version 2.2.0, unauthenticated users are able to bypass the application's built-in rate-limits by spoofing the X-Forwarded-For or X-Real-IP headers due to the rate-limit relying on the value of...

GHSA-844J-XRRQ-WGH4 OpenClaw: Forwarding header spoofing bypasses gateway.trustedProxies origin detection

Summary When gateway.trustedProxies was configured, spoofed loopback hops in forwarding headers could be accepted as the client origin and weaken downstream auth and rate-limit decisions. Affected Packages / Versions - Package: openclaw npm - Affected: = 2026.3.22 - Latest released tag checked:...

GO-2026-4830 NATS: Leafnode connections allow spoofing of Nats-Request-Info identity headers in github.com/nats-io/nats-server

NATS: Leafnode connections allow spoofing of Nats-Request-Info identity headers in github.com/nats-io/nats-server...

CVE-2026-33149

Tandoor Recipes is an application for managing recipes, planning meals, and building shopping lists. Versions up to and including 2.5.3 set ALLOWEDHOSTS = '' by default, which causes Django to accept any value in the HTTP Host header without validation. The application uses request.buildabsoluteu...

CVE-2026-33314

pyLoad is a free and open-source download manager written in Python. Prior to version 0.5.0b3.dev97, a Host Header Spoofing vulnerability in the @localcheck decorator allows unauthenticated external attackers to bypass local-only restrictions. This grants access to the Click'N'Load API endpoints,...

CVE-2025-69240

Raytha CMS allows an attacker to spoof X-Forwarded-Host or Host headers to attacker controlled domain. The attacker who knows the victim's email address can force the server to send an email with password reset link pointing to the domain from spoofed header. When victim clicks the link, browser...