CVE-2026-54764

Traefik is an HTTP reverse proxy and load balancer. Prior to v2.11.51, v3.6.22, and v3.7.6, Traefik's ForwardAuth middleware, even when configured with trustForwardHeader: false, derives the X-Forwarded-Port header sent to the authentication service from the original incoming request instead of t...

CVE-2026-54764 ForwardAuth middleware leaks X-Forwarded-Port spoofing via untrusted X-Forwarded-Proto when trustForwardHeader=false

Traefik is an HTTP reverse proxy and load balancer. Prior to v2.11.51, v3.6.22, and v3.7.6, Traefik's ForwardAuth middleware, even when configured with trustForwardHeader: false, derives the X-Forwarded-Port header sent to the authentication service from the original incoming request instead of t...

CVE-2026-54764 ForwardAuth middleware leaks X-Forwarded-Port spoofing via untrusted X-Forwarded-Proto when trustForwardHeader=false

Traefik is an HTTP reverse proxy and load balancer. Prior to v2.11.51, v3.6.22, and v3.7.6, Traefik's ForwardAuth middleware, even when configured with trustForwardHeader: false, derives the X-Forwarded-Port header sent to the authentication service from the original incoming request instead of t...

CVE-2026-54764

Summary of CVE-2026-54764 : Traefik’s ForwardAuth middleware can leak spoofed port information due to incorrect header handling when trustForwardHeader is false. Before fixes, the middleware derived X-Forwarded-Port from the original incoming request rather than the sanitized forwarded request, a...

CVE-2026-54764

Traefik is an HTTP reverse proxy and load balancer. Prior to v2.11.51, v3.6.22, and v3.7.6, Traefik's ForwardAuth middleware, even when configured with trustForwardHeader: false, derives the X-Forwarded-Port header sent to the authentication service from the original incoming request instead of t...

CVE-2026-54764: Insufficient Verification of Data Authenticity

Traefik is an HTTP reverse proxy and load balancer. Prior to v2.11.51, v3.6.22, and v3.7.6, Traefik's ForwardAuth middleware, even when configured with trustForwardHeader: false, derives the X-Forwarded-Port header sent to the authentication service from the original incoming request instead of t...

PT-2026-56074

Name of the Vulnerable Software and Affected Versions Coder versions prior to 2.29.17 Coder versions prior to 2.32.7 Coder versions prior to 2.33.8 Coder versions prior to 2.34.2 Description The workspace app proxy resolves the target app using the httpapi.RequestHost function, which prioritizes...

PT-2026-56084

Name of the Vulnerable Software and Affected Versions 9Router versions prior to 0.4.80 Description The dashboard login rate limiter derives client identity from the X-Forwarded-For HTTP header, which is controlled by the user. When the application is directly exposed or deployed behind a reverse...

9router: Login brute-force protection bypass via spoofed X-Forwarded-For header

The 9router dashboard login rate limiter derives the client identity from the attacker-controlled X-Forwarded-For HTTP header. When 9router is directly exposed, or deployed behind a reverse proxy that does not overwrite untrusted forwarding headers, a remote attacker can rotate the X-Forwarded-Fo...

PT-2026-55998

Name of the Vulnerable Software and Affected Versions Traefik versions prior to 2.11.51 Traefik versions prior to 3.6.22 Traefik versions prior to 3.7.6 Description The ForwardAuth middleware in this HTTP reverse proxy and load balancer incorrectly derives the X-Forwarded-Port header sent to the...

Access Control Bypass

Overview Affected versions of this package are vulnerable to Access Control Bypass via the handling of the forwarded-proto header when generating public URLs. An attacker can cause the application to generate spoofed canonical URLs by injecting or manipulating the forwarded-proto header value...

Access Control Bypass

Overview Affected versions of this package are vulnerable to Access Control Bypass via the handling of the forwarded-proto header when generating public URLs. An attacker can cause the application to generate spoofed canonical URLs by injecting or manipulating the forwarded-proto header value...

Gitea forwarded-proto validation allows canonical URL spoofing

Gitea versions before 1.25.5 accept malformed or injected forwarded-proto values when detecting public URLs, allowing spoofed canonical URL generation...

GHSA-V8F2-2GHQ-9WHV Gitea forwarded-proto validation allows canonical URL spoofing

Gitea versions before 1.25.5 accept malformed or injected forwarded-proto values when detecting public URLs, allowing spoofed canonical URL generation...

CVE-2026-27779

Gitea versions before 1.25.5 accept malformed or injected forwarded-proto values when detecting public URLs, allowing spoofed canonical URL generation...

CVE-2026-27779 Gitea forwarded-proto handling allows public URL spoofing

Gitea versions before 1.25.5 accept malformed or injected forwarded-proto values when detecting public URLs, allowing spoofed canonical URL generation...

CVE-2026-27779 Gitea forwarded-proto handling allows public URL spoofing

Gitea versions before 1.25.5 accept malformed or injected forwarded-proto values when detecting public URLs, allowing spoofed canonical URL generation...

CVE-2026-27779

Gitea versions before 1.25.5 accept malformed or injected forwarded-proto values when detecting public URLs, allowing spoofed canonical URL generation...

EUVD-2026-41637

Gitea versions before 1.25.5 accept malformed or injected forwarded-proto values when detecting public URLs, allowing spoofed canonical URL generation...

CVE-2026-27779

Gitea versions before 1.25.5 are vulnerable to an Access Control Bypass due to improper validation of the forwarded-proto header. An attacker can inject or manipulate this header to force the application to generate spoofed canonical URLs when detecting public URLs. The underlying issue resides i...