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:

Analyzed

Summary

Affected Context

Exploit Preconditions

Why This Happens

Potential Impact

General Mitigation Guidance

How Teams Detect Issues Like This

Frequently Asked Questions

Source

NDV

Recent Vulnerabilities

CWE-77;CWE-78

HIGH RISK

HIGH

(7.3)

OS Command Injection (CWE-78) in Totolink A7100RU setGameSpeedCfg CGI Handler

Remote Code Execution on the Router

April 6, 2026

CWE-77;CWE-78

HIGH RISK

HIGH

(7.3)

OS Command Injection (CWE-78) in Totolink A7100RU setFirewallType Handler

Remote Code Execution on Router Firmware

April 6, 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

Catch This CVE While Code Is Being Written

Detect vulnerable code directly in pull requests, so CVEs are fixed before merge.

Get Started

Ship clean & secure code faster

START 14 DAYS FREE TRIAL

BOOK A DEMO

Made with Love in San Francisco

355 Bryant St. San Francisco, CA 94107, USA

Ask AI for summary of CodeAnt

Made with Love in San Francisco

355 Bryant St. San Francisco, CA 94107, USA

Ask AI for summary of CodeAnt

Made with Love in San Francisco

355 Bryant St. San Francisco, CA 94107, USA

Ask AI for summary of CodeAnt

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

HIGH RISK

HIGH

(7.3)

OS Command Injection (CWE-78) in Totolink A7100RU setGameSpeedCfg CGI Handler

HIGH RISK

HIGH

(7.3)

OS Command Injection (CWE-78) in Totolink A7100RU setFirewallType Handler

Vulnerability Type

Vulnerability Type

Vulnerability Type

Catch This CVE While Code Is Being Written

Ship clean & secure code faster

Product

Pricing

Company

Legal

Developers

Compare

Product

Pricing

Company

Legal

Developers

Compare

Product

Pricing

Company

Legal

Developers

Compare