CVE-2026-24470Network attack vector

Authenticated internal service access via ExternalName routes

Published Jan 26, 2026 · Updated Jan 26, 2026

SSRF in Zalando Skipper before 0.24.0 allows remote authenticated users to send requests to internal services through ExternalName routes. The Kubernetes ingress data client converts an Ingress backend referencing an ExternalName Service into a proxy route without requiring an opt-in or destination allowlist. Creation rights for both an Ingress and an ExternalName Service are required, and successful use reaches only services accessible from Skipper.

CVSS severity8.1
High
EPSS probability0.28%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

SSRF in Zalando Skipper before 0.24.0 allows remote authenticated users to send requests to internal services through ExternalName routes. The Kubernetes ingress data client converts an Ingress backend referencing an ExternalName Service into a proxy route without requiring an opt-in or destination allowlist. Creation rights for both an Ingress and an ExternalName Service are required, and successful use reaches only services accessible from Skipper.

The record

CVE
CVE-2026-24470
Published
Jan 26, 2026
Updated
Jan 26, 2026
Vendor
Zalando
Product
Skipper
Classifications
CWE-441, CWE-918, T1090.001
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Jan 26, 2026CVE publishedPublication date reported by the CVE source.
  2. Jan 26, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=< 0.24.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Zalando · Skipperversion=< 0.24.0

Published CVSS scores

8.1GitHubCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-441Unintended Proxy or Intermediary ('Confused Deputy')
CWE-918Server-Side Request Forgery (SSRF)
T1090.001Internal Proxy

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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