Improper Pathname Limitation in IBM Langflow OSS Leaving Files Vulnerable
CVE-2026-19303

8.1HIGH

Key Information:

Vendor

IBM
Status
Langflow Oss
Vendor
CVE Published:
4 September 2026

What is CVE-2026-19303?

IBM Langflow OSS versions 1.0.0 through 1.11.2 are susceptible to a vulnerability that allows remote authenticated attackers to delete arbitrary files or directories. This arises from improper limitations placed on pathnames, enabling attackers to perform unauthorized file operations outside the intended directory structure, potentially leading to significant data loss or disruption.

Affected Version(s)

Langflow OSS 1.0.0 <= 1.11.2

References

https://www.ibm.com/support/pages/node/7285643
vendor-advisorypatch

CVSS V3.1

Score:
8.1
Severity:
HIGH
Confidentiality:
None
Integrity:
High
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
Low
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.