Check Point Advisories

Langflow Authentication Bypass (CVE-2026-21445)

Vulnerability
Protection

Check Point Reference:	CPAI-2026-0205
Date Published:	11 Jan 2026
Severity:	High
Last Updated:	Sunday 11 January, 2026
Source:
Industry Reference:	CVE-2026-21445
Protection Provided by:	Security Gateway R81, R80, R77, R75
Who is Vulnerable?	Langflow prior to 1.7.0.dev45
Vulnerability Description	An authentication bypass vulnerability in Langflow allows unauthenticated users to access sensitive user conversation data, transaction histories, and perform destructive operations. This affects endpoints handling personal data and system operations.

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 Langflow Authentication Bypass (CVE-2026-21445) 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: Web Server Enforcement Violation.
Attack Information: Langflow Authentication Bypass (CVE-2026-21445)