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Details of issue NIXPKGS-2026-0624

NIXPKGS-2026-0624
published on
Permalink CVE-2026-31838
updated 1 month, 4 weeks ago by @mweinelt Activity log
  • Created suggestion 1 month, 4 weeks ago
  • @mweinelt accepted 1 month, 4 weeks ago
  • @mweinelt published on GitHub 1 month, 4 weeks ago
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.

Affected products

istio
  • ==< 1.27.8
  • ==>= 1.29.0-alpha.0, < 1.29.1
  • ==>= 1.28.0-alpha.0, < 1.28.5

Matching in nixpkgs

pkgs.istioctl

Istio configuration command line utility for service operators to debug and diagnose their Istio mesh

Package maintainers

https://github.com/istio/istio/security/advisories/GHSA-974c-2wxh-g4ww