Is this vulnerability remotely exploitable?

Yes, if an attacker can remotely influence Lua filters (for example, via Kubernetes Ingress resources), they can cause Skipper to execute malicious inline Lua scripts without needing direct shell access to the host.

What level of access does an attacker need to exploit this?

The attacker needs the ability to define or modify Lua filters in the routing configuration. In many cluster setups, this corresponds to the ability to create or update certain Kubernetes resources (like Ingresses) in a shared controller, which may be granted to multiple tenants or application teams.

What is the safest general fix pattern?

The most robust fix is to remove inline script execution from untrusted configuration paths—disable `inline` as a Lua source where multi-tenant or untrusted users can modify filters—and limit scripting to trusted, operator-managed files with controlled review.

Severity:

HIGH RISK

(8.8)

Improper Script Execution (CWE-94) in Skipper Lua Filters Exposes Secrets

CVE-2026-23742

Published:

Jan 16, 2026

Status:

Awaiting Analysis

Summary

Affected Context

Exploit Preconditions

Why This Happens

Potential Impact

General Mitigation Guidance

How Teams Detect Issues Like This

Frequently Asked Questions

Source

NDV

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CRITICAL RISK

CRITICAL

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Account Takeover / Loss of Account Control

February 17, 2026

CWE-77;CWE-78

HIGH RISK

HIGH

(7.3)

OS Command Injection (CWE-78) in node-sonos-http-api TTS Provider for macOS

Remote Code Execution on the Server Host

February 17, 2026

Vulnerability Type

Category:

Improper Code Execution / Script Injection

CWE:

CWE-94;CWE-250;CWE-522

Impact:

Unauthorized Access to Sensitive Data and Potential Privilege Misuse

Severity:

HIGH RISK

(8.8)

CVSS Version:

3.1

Vulnerability Type

Category:

Improper Code Execution / Script Injection

CWE:

CWE-94;CWE-250;CWE-522

Impact:

Unauthorized Access to Sensitive Data and Potential Privilege Misuse

Severity:

HIGH RISK

(8.8)

CVSS Version:

3.1

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Improper Script Execution (CWE-94) in Skipper Lua Filters Exposes Secrets

Summary

Affected Context

Exploit Preconditions

Why This Happens

Potential Impact

General Mitigation Guidance

How Teams Detect Issues Like This

Frequently Asked Questions

Source

Recent Vulnerabilities

CRITICAL RISK

CRITICAL

(9.8)

Missing Authentication for Forgot-Password Email Change API (CWE-306)

HIGH RISK

HIGH

(7.3)

OS Command Injection (CWE-78) in node-sonos-http-api TTS Provider for macOS

Vulnerability Type

Vulnerability Type

Vulnerability Type

Vulnerability Type

Catch This CVE While Code Is Being Written

Ship clean & secure code faster

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