SUSE CVE-2026-39858

Traefik is an HTTP reverse proxy and load balancer. Prior to versions 2.11.43, 3.6.14, and 3.7.0-rc.2, 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...

dotnet: Dotnet: SMTP Command Injection and Header Injection via MailAddress parsing flaw

A flaw was found in the .NET runtime System.Net.Mail in how email address data is parsed. Improper neutralization of special characters, specifically carriage return and line feed CR/LF sequences, may allow specially crafted email address input to be interpreted incorrectly. An attacker could...

CVE-2026-39858

Traefik is an HTTP reverse proxy and load balancer. Prior to versions 2.11.43, 3.6.14, and 3.7.0-rc.2, 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...

CVE-2026-40575

A flaw was found in OAuth2 Proxy. When configured with --reverse-proxy and either --skip-auth-regex or --skip-auth-route, the proxy may trust a client-supplied X-Forwarded-Uri header. An unauthenticated remote attacker can exploit this by spoofing the header, leading to an authentication bypass...

Missing Authentication for Critical Function

Overview Affected versions of this package are vulnerable to Missing Authentication for Critical Function in the ServeHTTP function, which does not sufficiently sanitize X- alias headers. An attacker can gain unauthenticated access to protected endpoints by injecting spoofed trust context with...

Insufficient Verification of Data Authenticity

Overview Affected versions of this package are vulnerable to Insufficient Verification of Data Authenticity in the ForwardAuth middleware when trustForwardHeader is set to false and the deployment is behind a trusted upstream proxy. An attacker can gain unauthorized access to protected backend...

Insufficient Verification of Data Authenticity

Overview github.com/traefik/traefik/v2/pkg/middlewares/auth is a Cloud Native Application Proxy. Affected versions of this package are vulnerable to Insufficient Verification of Data Authenticity in the ForwardAuth middleware when trustForwardHeader is set to false and the deployment is behind a...

Insufficient Verification of Data Authenticity

Overview Affected versions of this package are vulnerable to Insufficient Verification of Data Authenticity in the ForwardAuth middleware when trustForwardHeader is set to false and the deployment is behind a trusted upstream proxy. An attacker can gain unauthorized access to protected backend...

Insufficient Verification of Data Authenticity

Overview Affected versions of this package are vulnerable to Insufficient Verification of Data Authenticity in the ForwardAuth middleware when trustForwardHeader is set to false and the deployment is behind a trusted upstream proxy. An attacker can gain unauthorized access to protected backend...

Insufficient Verification of Data Authenticity

Overview Affected versions of this package are vulnerable to Insufficient Verification of Data Authenticity in the ForwardAuth middleware when trustForwardHeader is set to false and the deployment is behind a trusted upstream proxy. An attacker can gain unauthorized access to protected backend...

User Impersonation

Overview Affected versions of this package are vulnerable to User Impersonation via the X-Forwarded-Uri header when the --reverse-proxy setting is enabled and either --skip-auth-regex or --skip-auth-route is configured. An attacker can gain unauthorized access to protected routes by spoofing the...

User Impersonation

Overview Affected versions of this package are vulnerable to User Impersonation via the X-Forwarded-Uri header when the --reverse-proxy setting is enabled and either --skip-auth-regex or --skip-auth-route is configured. An attacker can gain unauthorized access to protected routes by spoofing the...

CVE-2026-40575 OAuth2 Proxy has an Authentication Bypass via X-Forwarded-Uri Header Spoofing

OAuth2 Proxy is a reverse proxy that provides authentication using OAuth2 providers. Versions 7.5.0 through 7.15.1 may trust a client-supplied X-Forwarded-Uri header when --reverse-proxy is enabled and --skip-auth-regex or --skip-auth-route is configured. An attacker can spoof this header so OAut...

CVE-2026-40594 pyLoad: Session Cookie Security Downgrade via Untrusted X-Forwarded-Proto Header Spoofing (Global State Race Condition)

pyLoad is a free and open-source download manager written in Python. Prior to 0.5.0b3.dev98, the setsessioncookiesecure beforerequest handler in src/pyload/webui/app/init.py reads the X-Forwarded-Proto header from any HTTP request without validating that the request originates from a trusted prox...

CVE-2026-40594

CVE-2026-40594 affects pyLoad: the set_session_cookie_secure before_request in pyload/webui/app/init .py reads X-Forwarded-Proto without origin validation and mutates the global Flask SESSION_COOKIE_SECURE on every request. With Cheroot’s multi-threaded server (request_queue_size=512), this creat...

Security update for python-Django (important)

openSUSE security update: security update for python-django ------------------------------------------------------------- Announcement ID: openSUSE-SU-2026:20578-1 Rating: important References: bsc1261722 bsc1261724 bsc1261729 bsc1261731 bsc1261732 Cross-References: CVE-2026-33033 CVE-2026-33034...

cpython: email header injection due to unquoted newlines

A flaw was found in the email module in the Python standard library. When serializing an email message, the BytesGenerator class fails to properly quote newline characters for email headers. This issue is exploitable when the LiteralHeader class is used as it does not respect email folding rules,...

BIT-DJANGO-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...

BIT-AUTHENTIK-2023-36456 Authentik lacks Proxy IP headers validation

authentik is an open-source Identity Provider. Prior to versions 2023.4.3 and 2023.5.5, authentik does not verify the source of the X-Forwarded-For and X-Real-IP headers, both in the Python code and the go code. Only authentik setups that are directly accessible by users without a reverse proxy a...

GHSA-MP82-FMJ6-F22V pyLoad has a Session Cookie Security Downgrade via Untrusted X-Forwarded-Proto Header Spoofing (Global State Race Condition)

Summary The setsessioncookiesecure beforerequest handler in src/pyload/webui/app/init.py reads the X-Forwarded-Proto header from any HTTP request without validating that the request originates from a trusted proxy, then mutates the global Flask configuration SESSIONCOOKIESECURE on every request...