CVE-2026-41246

Contour is a Kubernetes ingress controller using Envoy proxy. From v1.19.0 to before v1.33.4, v1.32.5, and v1.31.6, Contour's Cookie Rewriting feature is vulnerable to Lua code injection. An attacker with RBAC permissions to create or modify HTTPProxy resources can craft a malicious value in...

CVE-2026-41246

Contour’s Cookie Rewriting feature (Envoy Lua filter) is vulnerable to Lua code injection from v1.19.0 up to before v1.33.4, v1.32.5, and v1.31.6. An attacker with RBAC to create/modify HTTPProxy resources can inject values into spec.routes[].cookieRewritePolicies[].pathRewrite.value (or services...

CVE-2026-41246 Contour: Lua code injection via Cookie Path Rewrite Policy

Contour is a Kubernetes ingress controller using Envoy proxy. From v1.19.0 to before v1.33.4, v1.32.5, and v1.31.6, Contour's Cookie Rewriting feature is vulnerable to Lua code injection. An attacker with RBAC permissions to create or modify HTTPProxy resources can craft a malicious value in...

CVE-2026-41246: Improper Control of Generation of Code

Contour is a Kubernetes ingress controller using Envoy proxy. From v1.19.0 to before v1.33.4, v1.32.5, and v1.31.6, Contour's Cookie Rewriting feature is vulnerable to Lua code injection. An attacker with RBAC permissions to create or modify HTTPProxy resources can craft a malicious value in...

Important: ecs-service-connect-agent

Issue Overview: Envoy is a high-performance edge/middle/service proxy. Prior to 1.37.1, 1.36.5, 1.35.8, and 1.34.13, the Envoy RBAC Role-Based Access Control filter contains a logic vulnerability in how it validates HTTP headers when multiple values are present for the same header name. Instead o...

Improper Certificate Validation

github.com/envoyproxy/envoy is vulnerable to improper certificate validation. The vulnerability is due to incorrect handling of embedded null bytes \0 in OTHERNAME SAN values within mTLS certificate matching, which allows an attacker to bypass certificate validation and achieve unauthorized acces...

Denial Of Service (DoS)

github.com/envoyproxy/envoy is vulnerable to a Denial Of Service DoS. The vulnerability is due to a re-entry bug in the JwksFetcherImpl during failed remote JWKS fetching with multiple JWT tokens, which allows an attacker to trigger a crash by sending crafted requests that cause overlapping fetch...

JLSEC-2026-2 Envoy is a cloud-native high-performance edge/middle/service proxy

Envoy is a cloud-native high-performance edge/middle/service proxy. Envoy’s HTTP/2 codec may leak a header map and bookkeeping structures upon receiving RSTSTREAM immediately followed by the GOAWAY frames from an upstream server. In nghttp2, cleanup of pending requests due to receipt of the GOAWA...

BIT-ENVOY-2026-26308 Envoy has an RBAC Header Validation Bypass via Multi-Value Header Concatenation

Envoy is a high-performance edge/middle/service proxy. Prior to 1.37.1, 1.36.5, 1.35.8, and 1.34.13, the Envoy RBAC Role-Based Access Control filter contains a logic vulnerability in how it validates HTTP headers when multiple values are present for the same header name. Instead of validating eac...

CVE-2026-26310

Envoy is a high-performance edge/middle/service proxy. Prior to 1.37.1, 1.36.5, 1.35.8, and 1.34.13, calling Utility::getAddressWithPort with a scoped IPv6 addresses causes a crash. This utility is called in the data plane from the originalsrc filter and the dns filter. This vulnerability is fixe...

CVE-2026-26311 Envoy HTTP: filter chain execution on reset streams causing UAF crash

Envoy is a high-performance edge/middle/service proxy. Prior to 1.37.1, 1.36.5, 1.35.8, and 1.34.13, a logic vulnerability in Envoy's HTTP connection manager FilterManager that allows for Zombie Stream Filter Execution. This issue creates a "Use-After-Free" UAF or state-corruption window where...

CVE-2026-26310 Crash for scoped ip address in Envoy during DNS

Envoy is a high-performance edge/middle/service proxy. Prior to 1.37.1, 1.36.5, 1.35.8, and 1.34.13, calling Utility::getAddressWithPort with a scoped IPv6 addresses causes a crash. This utility is called in the data plane from the originalsrc filter and the dns filter. This vulnerability is fixe...

CVE-2026-26309

Envoy CVE-2026-26309 describes an off-by-one write in Envoy::JsonEscaper::escapeString() that can corrupt std::string null-termination, causing undefined behavior and potentially crashes or out-of-bounds reads when treated as a C-string. Affected before 1.37.1, 1.36.5, 1.35.8, 1.34.13. The vulner...

CVE-2026-26308 Envoy has an RBAC Header Validation Bypass via Multi-Value Header Concatenation

Envoy is a high-performance edge/middle/service proxy. Prior to 1.37.1, 1.36.5, 1.35.8, and 1.34.13, the Envoy RBAC Role-Based Access Control filter contains a logic vulnerability in how it validates HTTP headers when multiple values are present for the same header name. Instead of validating eac...

EUVD-2026-10799

Envoy is a high-performance edge/middle/service proxy. Prior to 1.37.1, 1.36.5, 1.35.8, and 1.34.13, the Envoy RBAC Role-Based Access Control filter contains a logic vulnerability in how it validates HTTP headers when multiple values are present for the same header name. Instead of validating eac...

CVE-2026-26308

Envoy is a high-performance edge/middle/service proxy. Prior to 1.37.1, 1.36.5, 1.35.8, and 1.34.13, the Envoy RBAC Role-Based Access Control filter contains a logic vulnerability in how it validates HTTP headers when multiple values are present for the same header name. Instead of validating eac...

CVE-2026-26308 Envoy has an RBAC Header Validation Bypass via Multi-Value Header Concatenation

Envoy is a high-performance edge/middle/service proxy. Prior to 1.37.1, 1.36.5, 1.35.8, and 1.34.13, the Envoy RBAC Role-Based Access Control filter contains a logic vulnerability in how it validates HTTP headers when multiple values are present for the same header name. Instead of validating eac...

CVE-2026-26308

Envoy CVE-2026-26308 affects the Envoy RBAC filter. The issue arises from how multiple HTTP header values are validated: instead of validating each value separately, Envoy concatenates all values into a single comma-separated string, allowing bypass of Deny rules under RBAC. Affects versions prio...

CVE-2026-22771 Envoy Extension Policy lua scripts injection causes arbitrary command execution

Envoy Gateway is an open source project for managing Envoy Proxy as a standalone or Kubernetes-based application gateway. Prior to 1.5.7 and 1.6.2, EnvoyExtensionPolicy Lua scripts executed by Envoy proxy can be used to leak the proxy's credentials. These credentials can then be used to communica...

BIT-ENVOY-2025-64763 Envoy forwards early CONNECT data in TCP proxy mode

Envoy is a high-performance edge/middle/service proxy. In 1.33.12, 1.34.10, 1.35.6, 1.36.2, and earlier, when Envoy is configured in TCP proxy mode to handle CONNECT requests, it accepts client data before issuing a 2xx response and forwards that data to the upstream TCP connection. If a forwardi...