Is this vulnerability remotely exploitable?

Yes, in environments where the Arcane API is reachable to authenticated users over the network. An attacker with valid credentials and project creation rights can craft malicious lifecycle labels remotely and wait for an update to execute them.

Does an attacker need administrative access to exploit this issue?

No. The description indicates that any authenticated user who can create projects through the API can set the malicious labels. Administrator involvement is only needed later to trigger the container update, either manually or via scheduled mechanisms.

What is the safest general fix pattern for this class of bug?

The safest pattern is to eliminate free-form shell command execution based on user-provided values. Instead, design lifecycle hooks around predefined actions, parameterized commands, or strongly typed configuration. If shell usage is unavoidable, use strict allow-lists and robust validation, and avoid constructing command strings by concatenation.

Severity:

CRITICAL RISK

(9.0)

Command Injection via Lifecycle Labels (CWE-78) in Arcane Updater Service

CVE-2026-23520

Published:

Jan 15, 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-306

CRITICAL RISK

CRITICAL

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

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:

Command Injection

CWE:

CWE-78

Impact:

Arbitrary Command Execution within Managed Containers

Severity:

CRITICAL RISK

(9.0)

CVSS Version:

3.1

Vulnerability Type

Category:

Command Injection

CWE:

CWE-78

Impact:

Arbitrary Command Execution within Managed Containers

Severity:

CRITICAL RISK

(9.0)

CVSS Version:

3.1

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Command Injection via Lifecycle Labels (CWE-78) in Arcane Updater Service

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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