#VU120910 Missing Authentication for Critical Function in Langflow - CVE-2026-21445
Published: January 5, 2026
Vulnerability identifier: #VU120910
Vulnerability risk: High
CVSSv4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N/E:P/U:Amber
CVE-ID: CVE-2026-21445
CWE-ID: CWE-306
Exploitation vector: Remote access
Exploit availability:
Public exploit is available
Vulnerable software:
Langflow
Langflow
Software vendor:
Langflow
Langflow
Description
The vulnerability allows a remote attacker to compromise the target system.
The vulnerability exists due to missing authentication for critical function in critical API endpoints. A remote attacker can gain access to sensitive user conversation data and perform destructive operations.
Remediation
Install updates from vendor's website.