CVE-2026-24470

HIGH

8.1

Description

Skipper is an HTTP router and reverse proxy for service composition. Prior to version 0.24.0, when running Skipper as an Ingress controller, users with permissions to create an Ingress and a Service of type ExternalName can create routes that enable them to use Skipper's network access to reach internal services. Version 0.24.0 disables Kubernetes ExternalName by default. As a workaround, developers can allow list targets of an ExternalName and allow list via regular expressions.

CVE Details

CVSS v3.1 Score8.1

SeverityHIGH

CVSS VectorCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N

Attack VectorNETWORK

ComplexityLOW

Privileges RequiredLOW

User InteractionNONE

Published1/26/2026

Last Modified2/18/2026

Sourcenvd

Honeypot Sightings0

Affected Products

zalando:skipper

Weaknesses (CWE)

CWE-441CWE-918

References

https://github.com/zalando/skipper/commit/a4c87ce029a58eb8e1c2c1f93049194a39cf6219(security-advisories@github.com)

https://github.com/zalando/skipper/security/advisories/GHSA-mxxc-p822-2hx9(security-advisories@github.com)

https://kubernetes.io/docs/concepts/services-networking/service/#externalname(security-advisories@github.com)

IOC Correlations

No correlations recorded

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