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

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 with multiple header values in a way that causes Envoy to evaluate the header differently than intended, potentially bypassing authorization checks. This may allow unauthorized requests to reach protected services when policies depend on such header-based matching conditions. This vulnerability is fixed in 1.29.1, 1.28.5, and 1.27.8.

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授权机制不正确

Istio 安全漏洞

Istio是Istio开源的一套连接、管理和保护微服务的开放平台。 Istio 1.29.1之前版本、1.28.5之前版本和1.27.8之前版本存在安全漏洞，该漏洞源于Envoy RBAC标头匹配存在缺陷，可能导致授权策略绕过。

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