CVE-2026-6542
IBM Langflow OSS Information Disclosure and Data Deletion Vulnerability
Publication date: 2026-04-30
Last updated on: 2026-05-04
Assigner: IBM Corporation
Description
Description
CVSS Scores
EPSS Scores
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Meta Information
Affected Vendors & Products
| Vendor | Product | Version / Range |
|---|---|---|
| langflow | langflow | From 1.0.0 (inc) to 1.9.0 (exc) |
Helpful Resources
Exploitability
| CWE ID | Description |
|---|---|
| CWE-639 | The system's authorization functionality does not prevent one user from gaining access to another user's data or record by modifying the key value identifying the data. |
Attack-Flow Graph
AI Powered Q&A
Can you explain this vulnerability to me?
This vulnerability exists in IBM Langflow OSS versions 1.0.0 through 1.8.4. It allows any user to supply a flow_id and thereby read transaction logs and vertex build data that belong to other users. Additionally, it enables the deletion of persisted vertex build data for another user's flow.
How can this vulnerability impact me? :
The vulnerability can lead to unauthorized access to sensitive transaction logs and vertex build data of other users, potentially exposing confidential information. It also allows malicious users to delete important persisted data belonging to others, which could disrupt operations or cause data loss.
How does this vulnerability affect compliance with common standards and regulations (like GDPR, HIPAA)?:
This vulnerability allows any user to read transaction logs and vertex build data belonging to other users, and to delete persisted vertex build data for another user's flow.
Such unauthorized access and deletion of user data could lead to violations of data protection regulations like GDPR and HIPAA, which require strict controls on access to personal and sensitive information.
Therefore, this vulnerability potentially compromises confidentiality and integrity of user data, impacting compliance with these common standards.