Is this vulnerability remotely exploitable over the network?

Yes. Any attacker who can reach the Arcane manager's API endpoint can attempt to access remote environments via the affected `/api/environments/{id}/...` routes without providing credentials.

Does exploitation require valid user credentials or local access?

No valid credentials are required. Exploitation only needs network-level access to the Arcane API; authentication is bypassed because the proxy middleware forwards requests with a manager-held agent token.

What is the safest general fix pattern for this kind of issue?

The safest pattern is to enforce authentication and authorization

Severity:

CRITICAL RISK

(9.8)

Missing Authentication for Remote Environment Proxy (CWE-306) in Arcane Docker Management Interface

CVE-2026-23944

Published:

Jan 19, 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

(9.8)

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:

Missing Authentication

CWE:

CWE-306

Impact:

Unauthenticated Access to Remote Environment Resources

Severity:

CRITICAL RISK

(9.8)

CVSS Version:

3.1

Vulnerability Type

Category:

Missing Authentication

CWE:

CWE-306

Impact:

Unauthenticated Access to Remote Environment Resources

Severity:

CRITICAL RISK

(9.8)

CVSS Version:

3.1

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Missing Authentication for Remote Environment Proxy (CWE-306) in Arcane Docker Management Interface

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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