CVE-2026-73547 | 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 authorization response. A path-less CONNECT request makes request_headers_->Path() return null, and Filter::onComplete dereferences that pointer while parsing the query string.
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 authorization response. A path-less CONNECT request makes request_headers_->Path() return null, and Filter::onComplete dereferences that pointer while parsing the query string. An unauthenticated downstream client can crash the Envoy process when the filter and authorization response use query-parameter mutation. The relevant scope boundary is that the deployment must accept path-less CONNECT and configure ext_authz query-parameter mutation. This issue is fixed in versions 1.36.10, 1.37.6, 1.38.4, and 1.39.1.
- 🔗 github.com/envoyproxy/envoy/security/advisories/GHSA…
- 🔗 github.com/envoyproxy/envoy/commit/064af2e61d0d1c421…
- 🔗 github.com/envoyproxy/envoy/commit/5f3b8e9b2b8a787a6…
- 🔗 github.com/envoyproxy/envoy/commit/838f8ffd9d7b52176…
- 🔗 github.com/envoyproxy/envoy/commit/c3170d7c747e51bb8…
- 🔗 github.com/envoyproxy/envoy/releases/tag/v1.36.10
- 🔗 github.com/envoyproxy/envoy/releases/tag/v1.37.6
- 🔗 github.com/envoyproxy/envoy/releases/tag/v1.38.4
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CVE-2026-73547 | 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 authorization response. A path-less CONNECT request makes request_headers_->Path() return null, and Filter::onComplete dereferences that pointer while parsing the query string.
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_parameter
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