Arbitrary Code Injection Affecting github.com/zalando/skipper/config package, versions <0.23.0
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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- published18 Jan 2026
- disclosed16 Jan 2026
- creditb0b0haha, moyushui
Introduced: 16 Jan 2026
CVE-2026-23742 Â (opens in a new tab)How to fix?
Upgrade github.com/zalando/skipper/config to version 0.23.0 or higher.
Overview
Affected versions of this package are vulnerable to Arbitrary Code Injection via the default configuration -lua-sources=inline,file. An attacker can execute arbitrary code and access sensitive files by submitting malicious scripts when untrusted users are permitted to create lua filters.
Note: This is only exploitable if untrusted users can create lua filters, such as through a Kubernetes Ingress resource.