CVE-2026-28367 Undertow: undertow: request smuggling via `\r\r\r` as a header block terminator

A flaw was found in Undertow. A remote attacker can exploit this vulnerability by sending \r\r\r as a header block terminator. This can be used for request smuggling with certain proxy servers, such as older versions of Apache Traffic Server and Google Cloud Classic Application Load Balancer,...

CVE-2026-28369

A flaw was found in Undertow. When Undertow receives an HTTP request where the first header line starts with one or more spaces, it incorrectly processes the request by stripping these leading spaces. This behavior, which violates HTTP standards, can be exploited by a remote attacker to perform...

CVE-2026-28369

Undertow contains a vulnerability where the first HTTP header line with leading spaces is stripped, violating HTTP standards and enabling request smuggling. Affected component: Undertow HTTP header parsing. Root cause: improper handling that trims leading spaces on the initial header line. Impact...

CVE-2026-28368

A vulnerability (CVE-2026-28368) affects Undertow and involves a discrepancy in header parsing between Undertow and upstream proxies, enabling HTTP request smuggling. Reported across multiple sources (NVD, Debian/Ubuntu OSV, Circl, GitHub advisories, and Nessus plugin) with confirmed references t...

CVE-2026-28368

A flaw was found in Undertow. This vulnerability allows a remote attacker to construct specially crafted requests where header names are parsed differently by Undertow compared to upstream proxies. This discrepancy in header interpretation can be exploited to launch request smuggling attacks,...

CVE-2026-28368

A flaw was found in Undertow. This vulnerability allows a remote attacker to construct specially crafted requests where header names are parsed differently by Undertow compared to upstream proxies. This discrepancy in header interpretation can be exploited to launch request smuggling attacks,...

CVE-2026-28368 Undertow: undertow: request smuggling via inconsistent header parsing

A flaw was found in Undertow. This vulnerability allows a remote attacker to construct specially crafted requests where header names are parsed differently by Undertow compared to upstream proxies. This discrepancy in header interpretation can be exploited to launch request smuggling attacks,...

CVE-2026-28368 Undertow: undertow: request smuggling via inconsistent header parsing

A flaw was found in Undertow. This vulnerability allows a remote attacker to construct specially crafted requests where header names are parsed differently by Undertow compared to upstream proxies. This discrepancy in header interpretation can be exploited to launch request smuggling attacks,...

User Impersonation

Overview github.com/traefik/traefik/v2/pkg/middlewares/auth is a Cloud Native Application Proxy. Affected versions of this package are vulnerable to User Impersonation through the basicAuth and digestAuth middleware headerField handling in pkg/middlewares/auth/basicauth.go and...

User Impersonation

Overview Affected versions of this package are vulnerable to User Impersonation through the basicAuth and digestAuth middleware headerField handling in pkg/middlewares/auth/basicauth.go and pkg/middlewares/auth/digestauth.go. An attacker can impersonate an arbitrary user identity to backend...

CVE-2026-4984

The Twilio integration webhook handler accepts any POST request without validating Twilio's 'X-Twilio-Signature'. When processing media messages, it fetches user-controlled URLs 'MediaUrlN' parameters using HTTP requests that include the integration's Twilio credentials in the 'Authorization'...

CVE-2026-33433

Traefik is an HTTP reverse proxy and load balancer. Prior to versions 2.11.42, 3.6.11, and 3.7.0-ea.3, when headerField is configured with a non-canonical HTTP header name e.g., x-auth-user instead of X-Auth-User, an authenticated attacker can inject their own canonical version of that header to...

CVE-2021-27003

Clustered Data ONTAP versions prior to 9.5P18, 9.6P15, 9.7P14, 9.8P5 and 9.9.1 are missing an X-Frame-Options header which could allow a clickjacking attack...

CVE-2026-33433 Traefik Vulnerable to BasicAuth/DigestAuth Identity Spoofing via Non-Canonical headerField

Traefik is an HTTP reverse proxy and load balancer. Prior to versions 2.11.42, 3.6.11, and 3.7.0-ea.3, when headerField is configured with a non-canonical HTTP header name e.g., x-auth-user instead of X-Auth-User, an authenticated attacker can inject their own canonical version of that header to...

CVE-2026-33433 Traefik Vulnerable to BasicAuth/DigestAuth Identity Spoofing via Non-Canonical headerField

Traefik is an HTTP reverse proxy and load balancer. Prior to versions 2.11.42, 3.6.11, and 3.7.0-ea.3, when headerField is configured with a non-canonical HTTP header name e.g., x-auth-user instead of X-Auth-User, an authenticated attacker can inject their own canonical version of that header to...

CVE-2026-33433

CVE-2026-33433 affects Traefik prior to 2.11.42, 3.6.11, and 3.7.0-ea.3. A vulnerability in the BasicAuth/DigestAuth middlewares arises when headerField is configured with a non-canonical HTTP header name (for example x-auth-user). An authenticated attacker can inject a canonical version of that ...

CVE-2026-33433

Traefik is an HTTP reverse proxy and load balancer. Prior to versions 2.11.42, 3.6.11, and 3.7.0-ea.3, when headerField is configured with a non-canonical HTTP header name e.g., x-auth-user instead of X-Auth-User, an authenticated attacker can inject their own canonical version of that header to...

CVE-2026-33433 Traefik Vulnerable to BasicAuth/DigestAuth Identity Spoofing via Non-Canonical headerField

Traefik is an HTTP reverse proxy and load balancer. Prior to versions 2.11.42, 3.6.11, and 3.7.0-ea.3, when headerField is configured with a non-canonical HTTP header name e.g., x-auth-user instead of X-Auth-User, an authenticated attacker can inject their own canonical version of that header to...

CVE-2026-33433

Traefik is an HTTP reverse proxy and load balancer. Prior to versions 2.11.42, 3.6.11, and 3.7.0-ea.3, when headerField is configured with a non-canonical HTTP header name e.g., x-auth-user instead of X-Auth-User, an authenticated attacker can inject their own canonical version of that header to...

CVE-2026-32695

Traefik is an HTTP reverse proxy and load balancer. Prior to versions 3.6.11 and 3.7.0-ea.2, Traefik's Knative provider builds router rules by interpolating user-controlled values into backtick-delimited rule expressions without escaping. In live cluster validation, Knative rules.hosts was...