What is CVE-2026-24470?

CVE-2026-24470 is a high-severity vulnerability in Zalando Skipper, classified under Unintended Proxy or Intermediary (Confused Deputy). CVSS score: 8.1/10. Published 2026-01-26.

How severe is CVE-2026-24470?

High severity. CVSS v3 base score is 8.1 out of 10.

SSRF in Zalando Skipper

CVE-2026-24470

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.

Published 2026-01-26 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 8.1 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N.

EPSS exploit prediction

EPSS: 0.003 (23.1th percentile), scored 2026-10-24.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 23rd percentile — 23.1% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.003 · newest: 0.003 · change: +0.000

Affected products

Zalando Skipper — versions < 0.24.0

Weakness classification (CWE)

References

github.com/zalando/skipper/security/advisories/GHSA-mxxc-p822-2hx9 (Mitigation, Vendor Advisory)
github.com/zalando/skipper/commit/a4c87ce029a58eb8e1c2c1f93049194a39cf6219 (Patch)
kubernetes.io/docs/concepts/services-networking/service/ (Product)

Frequently asked questions

What is CVE-2026-24470?: CVE-2026-24470 is a high-severity vulnerability in Zalando Skipper, classified under Unintended Proxy or Intermediary (Confused Deputy). CVSS score: 8.1/10. Published 2026-01-26.
How severe is CVE-2026-24470?: High severity. CVSS v3 base score is 8.1 out of 10.