Zalando: >> Skipper >> 0.10.117 Security Vulnerabilities
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.
CVSS Score
8.1
EPSS Score
0.0
Published
2026-01-26
Skipper is an HTTP router and reverse proxy for service composition. The default skipper configuration before 0.23.0 was -lua-sources=inline,file. The problem starts if untrusted users can create lua filters, because of -lua-sources=inline , for example through a Kubernetes Ingress resource. The configuration inline allows these user to create a script that is able to read the filesystem accessible to the skipper process and if the user has access to read the logs, they an read skipper secrets. This vulnerability is fixed in 0.23.0.
CVSS Score
8.8
EPSS Score
0.0
Published
2026-01-16
Zalando Skipper v0.13.236 is vulnerable to Server-Side Request Forgery (SSRF).
CVSS Score
9.8
EPSS Score
0.47
Published
2022-10-25
In Zalando Skipper before 0.13.218, a query predicate could be bypassed via a prepared request.
CVSS Score
7.5
EPSS Score
0.002
Published
2022-06-23