CVE-2026-19304 PUBLISHED

Langflow is vulnerable to Server-Side Request Forgery due to missing or bypassable URL validation in multiple components

Assigner: ibm
Reserved: 07.08.2026 Published: 04.09.2026 Updated: 04.09.2026

IBM Langflow OSS 1.0.0 through 1.11.2 could allow a remote authenticated attacker to obtain sensitive information from internal services due to a URL parser discrepancy.

Metrics

CVSS 3.1

CVSS Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N
CVSS Score: 7.7

Attack Vector	Network	Scope	Changed
Attack Complexity	Low	Confidentiality Impact	High
Privileges Required	Low	Integrity Impact	None
User Interaction	None	Availability Impact	None

CVSS 3.1

Product Status

Vendor	IBM
Product	Langflow OSS
Versions	affected from 1.0.0 to 1.11.2 (incl.)

Solutions

IBM strongly recommends addressing the vulnerability now by upgrading Langflow OSS to version 1.11.3 https://pypi.org/project/langflow/

References

https://www.ibm.com/support/pages/node/7285639

Problem Types

CWE-918 Server-Side Request Forgery (SSRF) CWE