PT-2026-102725

Envoy is an open source edge and service proxy designed for cloud-native applications. Prior to 1.36.10, 1.37.6, 1.38.4, and 1.39.1, Envoy's ext authz filter assumes that a request contains a :path pseudoheader when applying query parameters to set or query parameters to remove from an...

EUVD-2026-39828

Envoy is an open source edge and service proxy designed for cloud-native applications. From 1.36.0 until 1.36.9, 1.37.5, and 1.38.3, a Use-After-Free UAF vulnerability leading to a sudden segmentation fault exists in Envoy's extauthz HTTP filter when processing per-route authorization overrides...

CVE-2026-47205 Envoy: ext_authz Use-After-Free during Stream Teardown with Per-Route Overrides

Envoy is an open source edge and service proxy designed for cloud-native applications. From 1.36.0 until 1.36.9, 1.37.5, and 1.38.3, a Use-After-Free UAF vulnerability leading to a sudden segmentation fault exists in Envoy's extauthz HTTP filter when processing per-route authorization overrides...

PT-2024-31791

Name of the Vulnerable Software and Affected Versions: Envoy versions prior to 1.28.7 Envoy versions prior to 1.29.9 Envoy versions prior to 1.30.6 Envoy versions prior to 1.31.2 Description: Envoy is a cloud-native high-performance edge/middle/service proxy. The http async client will crash when...

BIT-ENVOY-2021-32777 Incorrect concatenation of multiple value request headers in ext-authz extension

Envoy is an open source L7 proxy and communication bus designed for large modern service oriented architectures. In affected versions when ext-authz extension is sending request headers to the external authorization service it must merge multiple value headers according to the HTTP spec. However,...

Design/Logic Flaw

Envoy is an open source edge and service proxy designed for cloud-native applications. Prior to versions 1.26.0, 1.25.3, 1.24.4, 1.23.6, and 1.22.9, escalation of privileges is possible when failuremodeallow: true is configured for extauthz filter. For affected components that are used for loggin...

Authorization Bypass

servicemesh-proxy is vulnerable to authorization bypass. It allows specifically crafted requests to bypass authorization. Attackers may be able to escalate privileges when using ext-authz extension or back end service that uses multiple value headers for authorization. A specifically constructed...

CVE-2021-32777

Envoy is an open source L7 proxy and communication bus designed for large modern service oriented architectures. In affected versions when ext-authz extension is sending request headers to the external authorization service it must merge multiple value headers according to the HTTP spec. However,...

CVE-2021-32777

Envoy is an open source L7 proxy and communication bus designed for large modern service oriented architectures. In affected versions when ext-authz extension is sending request headers to the external authorization service it must merge multiple value headers according to the HTTP spec. However,...

Authorization

Envoy is an open source L7 proxy and communication bus designed for large modern service oriented architectures. In affected versions when ext-authz extension is sending request headers to the external authorization service it must merge multiple value headers according to the HTTP spec. However,...

CVE-2021-32777

Envoy is an open source L7 proxy and communication bus designed for large modern service oriented architectures. In affected versions when ext-authz extension is sending request headers to the external authorization service it must merge multiple value headers according to the HTTP spec. However,...

CVE-2021-32777

CVE-2021-32777 affects Envoy’s ext-authz extension, where sending request headers to the external authorization service fails to merge multiple value headers as required by HTTP spec. This can allow specially crafted requests to bypass authorization or escalate privileges when multiple-valued hea...

CVE-2021-32777: Incorrect Behavior Order: Authorization Before Parsing and Canonicalization

Envoy is an open source L7 proxy and communication bus designed for large modern service oriented architectures. In affected versions when ext-authz extension is sending request headers to the external authorization service it must merge multiple value headers according to the HTTP spec. However,...