Check Point Advisories

Decolua 9Router Authentication Bypass (CVE-2026-55638)

Vulnerability
Protection

Check Point Reference:	CPAI-2026-9718
Date Published:	3 Aug 2026
Severity:	High
Last Updated:	Monday 03 August, 2026
Source:
Industry Reference:	CVE-2026-55638
Protection Provided by:	Security Gateway R81, R80, R77, R75
Who is Vulnerable?	Decolua 9Router prior to 0.5.2
Vulnerability Description	An authentication bypass vulnerability in Decolua 9Router allows remote unauthenticated attackers to send requests to /codex/* and bypass the API-key gate, causing the server to make upstream provider calls using operator-stored LLM provider credentials.

Protection Overview

This protection detects attempts to exploit this vulnerability.

In order for the protection to be activated, update your Security Gateway product to the latest IPS update. For information on how to update IPS, go to SBP-2006-05, click on Protection tab and select the version of your choice.

Security Gateway R81 / R80 / R77 / R75

In the IPS tab, click Protections and find the Decolua 9Router Authentication Bypass (CVE-2026-55638) protection using the Search tool and Edit the protection's settings.
Install policy on all Security Gateways.

This protection's log will contain the following information:

Attack Name: Application Servers Protection Violation.
Attack Information: Decolua 9Router Authentication Bypass (CVE-2026-55638)