CVE-2026-49332

The CVE-2026-49332 entry concerns openshift/oauth-proxy. Affected component: the proxy handling of authenticated identity headers. Root cause: the proxy uses dash-variant headers (e.g., X-Forwarded-User) but does not strip underscore-variant headers (X_Forwarded_User). Because WSGI and PHP framew...

CVE-2026-49332 Openshift/oauth-proxy: openshift/oauth-proxy: underscore header smuggling enables identity impersonation on wsgi/php upstreams

A flaw was found in openshift/oauth-proxy. The proxy sets authenticated identity headers using only dash-variant keys X-Forwarded-User but does not strip underscore-variant keys XForwardedUser from incoming requests. WSGI and PHP frameworks normalize both variants to the same variable, allowing a...

CVE-2026-49332

A flaw was found in openshift/oauth-proxy. The proxy sets authenticated identity headers using only dash-variant keys X-Forwarded-User but does not strip underscore-variant keys XForwardedUser from incoming requests. WSGI and PHP frameworks normalize both variants to the same variable, allowing a...

CVE-2026-54763

A flaw was found in Traefik, an HTTP reverse proxy and load balancer. The BasicAuth, DigestAuth, and ForwardAuth middlewares in Traefik do not correctly treat underscore-variant header names. This allows a remote attacker to inject a specially crafted header that bypasses Traefik's security...

CVE-2026-54763

Traefik (HTTP reverse proxy/load balancer) before versions v2.11.51, v3.6.22, and v3.7.6 allows underscore-variant identity spoofing via BasicAuth, DigestAuth, and ForwardAuth middlewares. These middlewares strip canonical header names but don’t account for underscore-variant headers, letting an ...

Traefik < 2.11.43 / 3.x < 3.6.14 Multiple Vulnerabilities

The version of Traefik installed on the remote macOS host is prior to 2.11.43 or 3.x prior to 3.6.14. It is, therefore, affected by multiple vulnerabilities: - An authentication bypass via StripPrefixRegex and ForwardAuth dot-segment normalization. When StripPrefixRegex processes URLs with...

GHSA-5M6W-WVH7-57VM Traefik: Pre-authentication decision bypass due to forwarded alias spoofing

Summary There is a high severity authentication bypass vulnerability in Traefik's ForwardAuth and snippet-based authentication middleware. Traefik's forwarded-header sanitization logic targets only canonical header names e.g., X-Forwarded-Proto and does not strip or normalize alias variants that...

HTTP Header Injection

Overview Affected versions of this package are vulnerable to HTTP Header Injection via the processing of HTTP headers containing underscores, which are normalized to dashes by certain upstream applications. Authenticated users can escalate privileges by injecting specially crafted XForwarded-...

SUSE CVE-2015-0219

Django before 1.4.18, 1.6.x before 1.6.10, and 1.7.x before 1.7.3 allows remote attackers to spoof WSGI headers by using an underscore character instead of a - dash character in an HTTP header, as demonstrated by an X-AuthUser header...

Phusion Passenger Spoofing Vulnerability

Phusion Passenger is an Apache module for deploying Ruby on Rails projects on Apache and Nginx web servers. A security vulnerability exists in the agent/Core/Controller/SendRequest.cpp file of Phusion Passenger, which allows a remote attacker to forge the request header passed to the application ...

DEBIAN-CVE-2015-7519

agent/Core/Controller/SendRequest.cpp in Phusion Passenger before 4.0.60 and 5.0.x before 5.0.22, when used in Apache integration mode or in standalone mode without a filtering proxy, allows remote attackers to spoof headers passed to applications by using an underscore character instead of a -...

PYSEC-2015-4

Django before 1.4.18, 1.6.x before 1.6.10, and 1.7.x before 1.7.3 allows remote attackers to spoof WSGI headers by using an underscore character instead of a - dash character in an HTTP header, as demonstrated by an X-AuthUser header...

UBUNTU-CVE-2015-0219

Django before 1.4.18, 1.6.x before 1.6.10, and 1.7.x before 1.7.3 allows remote attackers to spoof WSGI headers by using an underscore character instead of a - dash character in an HTTP header, as demonstrated by an X-AuthUser header...

PT-2015-4526 · Django +1 · Django +1

Name of the Vulnerable Software and Affected Versions: Django versions 1.4.17 and earlier Django versions 1.6.x before 1.6.10 Django versions 1.7.x before 1.7.3 Description: The issue allows remote attackers to spoof WSGI headers by using an underscore character instead of a - dash character in a...