Threat Intelligence Database

Skipper is an HTTP router and reverse proxy for service composition. Prior to 0.26.10, zalando/skipper's OpenPolicyAgent integration silently bypasses request-body inspection on HTTP/1.1 Transfer-Encoding: chunked and HTTP/2 requests that omit the content-length pseudo-header, because the opaAuthorizeRequestWithBody filter and OpenPolicyAgentInstance.ExtractHttpBodyOptionally in filters/openpolicyagent/openpolicyagent.go produce an empty raw_body and input.parsed_body while the upstream service receives the full attacker-controlled body. This issue is fixed in version 0.26.10.

CVE-2026-24470 is a high-severity vulnerability in Zalando's Skipper HTTP router and reverse proxy, versions prior to 0.24.0. When used as a Kubernetes Ingress controller, it allows users with permissions to create Ingress and ExternalName Services to route traffic through Skipper to internal services, effectively bypassing network restrictions. This unintended proxy or 'confused deputy' flaw can lead to high confidentiality and integrity impacts without requiring user interaction. The vulnerability is mitigated in version 0.24.0 by disabling ExternalName Services by default and can be further controlled by allow-listing targets. European organizations using Skipper in Kubernetes environments should prioritize upgrading and applying strict allow-listing to prevent unauthorized internal access. Countries with strong Kubernetes adoption and critical cloud-native infrastructure, such as Germany, the UK, and the Netherlands, are most likely to be affected.

HighVulnerabilityGermanyNetherlandsFrance+3#cve#cve-2026-24470#cwe-441