hono: Lambda@Edge adapter keeps only the last value of a repeated request header, dropping the rest

Summary On AWS Lambda@Edge, CloudFront delivers a request header that appears more than once as several separate entries. The adapter writes each value with Headers.set instead of Headers.append, so every value overwrites the previous one and only the last reaches the application. Repeated reques...

GHSA-WGPF-JWQJ-8H8P hono: Lambda@Edge adapter keeps only the last value of a repeated request header, dropping the rest

Summary On AWS Lambda@Edge, CloudFront delivers a request header that appears more than once as several separate entries. The adapter writes each value with Headers.set instead of Headers.append, so every value overwrites the previous one and only the last reaches the application. Repeated reques...

PT-2026-49736

Summary On AWS Lambda@Edge, CloudFront delivers a request header that appears more than once as several separate entries. The adapter writes each value with Headers.set instead of Headers.append, so every value overwrites the previous one and only the last reaches the application. Repeated reques...

SUSE CVE-2026-31838

Istio is an open platform to connect, manage, and secure microservices. Prior to 1.29.1, 1.28.5, and 1.27.8, a vulnerability in Envoy RBAC header matching could allow authorization policy bypass when policies rely on HTTP headers that may contain multiple values. An attacker could craft requests...

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...

curl: Curl_compareheader() fails to match multi-value HTTP headers

Summary Curlcompareheader in lib/http.c fails to scan the full value of HTTP headers for substring matches. Due to an incorrect loop condition, only the first byte position of the header value is checked. This causes curl to miss connection options like close when they appear as non-first tokens ...

CVE-2026-31838

Istio is an open platform to connect, manage, and secure microservices. Prior to 1.29.1, 1.28.5, and 1.27.8, a vulnerability in Envoy RBAC header matching could allow authorization policy bypass when policies rely on HTTP headers that may contain multiple values. An attacker could craft requests...

CVE-2026-31838 Istio HTTP debug endpoints on port 15014 to enforce namespace-based authorization, preventing cross-namespace proxy data access.

Istio is an open platform to connect, manage, and secure microservices. Prior to 1.29.1, 1.28.5, and 1.27.8, a vulnerability in Envoy RBAC header matching could allow authorization policy bypass when policies rely on HTTP headers that may contain multiple values. An attacker could craft requests...

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 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 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...

Envoy has RBAC Header Validation Bypass via Multi-Value Header Concatenation

Summary 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 each header value individually, Envoy concatenates all values into a single comma-separated...

Envoy 安全漏洞

Envoy is an open-source gateway program developed by Enphase for connecting smart home devices. There are security vulnerabilities in versions of Envoy prior to 1.37.1, 1.36.5, 1.35.8, and 1.34.13. These vulnerabilities stem from logical flaws in the role-based access control filter, which may...

PT-2026-24489

Istio is an open platform to connect, manage, and secure microservices. Prior to 1.29.1, 1.28.5, and 1.27.8, a vulnerability in Envoy RBAC header matching could allow authorization policy bypass when policies rely on HTTP headers that may contain multiple values. An attacker could craft requests...

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,...

Bref Doesn't Support Multiple Value Headers in ApiGatewayFormatV2

Impacted Resources bref/src/Event/Http/HttpResponse.php:61-90 Description When Bref is used in combination with an API Gateway with the v2 format, it does not handle multiple values headers. Precisely, if PHP generates a response with two headers having the same key but different values only the...

CVE-2024-24753 Bref Multiple Value Headers Not Supported in ApiGatewayFormatV2

Bref enable serverless PHP on AWS Lambda. When Bref is used in combination with an API Gateway with the v2 format, it does not handle multiple values headers. If PHP generates a response with two headers having the same key but different values only the latest one is kept. If an application relie...

CVE-2024-24753 Bref Multiple Value Headers Not Supported in ApiGatewayFormatV2

Bref enable serverless PHP on AWS Lambda. When Bref is used in combination with an API Gateway with the v2 format, it does not handle multiple values headers. If PHP generates a response with two headers having the same key but different values only the latest one is kept. If an application relie...

Bref Security Breach

Bref is an open source project by Matthieu Napoli Individual Developer that helps you go serverless on AWS using PHP. A security vulnerability exists in versions prior to Bref 2.1.13 that stems from not handling multiple value headers when Bref is used in conjunction with a v2-formatted API gatew...