Information Disclosure and Injection Vulnerability in IBM Langflow Software
CVE-2026-18904

8.2HIGH

Key Information:

Vendor

IBM
Status
Langflow Oss
Vendor
CVE Published:
28 August 2026

What is CVE-2026-18904?

IBM Langflow OSS versions 1.0.0 to 1.11.1 contain a security vulnerability that enables a remote attacker to exploit a namespace collision between user identifiers. This flaw allows unauthorized access to sensitive information and the injection of malicious messages into the system. Proper mitigation strategies should be adopted to protect sensitive data and avoid potential compromise.

Affected Version(s)

Langflow OSS 1.0.0 <= 1.11.1

References

https://www.ibm.com/support/pages/node/7284579
vendor-advisorypatch

CVSS V3.1

Score:
8.2
Severity:
HIGH
Confidentiality:
High
Integrity:
Low
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.