Path Traversal Vulnerability in IBM Langflow OSS Affects User Data Security
CVE-2026-18899

7.5HIGH

Key Information:

Vendor

IBM
Status
Langflow Oss
Vendor
CVE Published:
28 August 2026

What is CVE-2026-18899?

A path traversal vulnerability in IBM Langflow OSS versions 1.0.0 through 1.11.1 permits a remote attacker to gain unauthorized access to arbitrary files on the server. Exploitation of this vulnerability can lead to the exposure of sensitive data, potentially compromising user privacy and security. It's crucial for users of affected versions to apply the available patches from IBM to mitigate the risks associated with this vulnerability.

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:
7.5
Severity:
HIGH
Confidentiality:
High
Integrity:
None
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.