CVE-2026-9130 Details
Description
IBM Langflow OSS 1.0.0 through 1.10.3 contain an authorization bypass vulnerability in the MemoryComponent that allows authenticated users to access chat history of other users via session_id collision. The MemoryComponent.retrieve_messages and store_message methods filter on session_id without validating flow_id or user_id ownership, enabling cross-user information disclosure through multiple authenticated API endpoints including /api/v1/run/*, /api/v1/responses, and /api/v2/workflow/*. This vulnerability only affects multi-user deployments with LANGFLOW_AUTO_LOGIN=False.
An authorization bypass vulnerability has been identified in IBM Langflow OSS versions 1.0.0 through 1.10.3. This vulnerability resides in the MemoryComponent, where the methods 'retrieve_messages' and 'store_message' improperly filter session IDs. The lack of validation for flow ID or user ID ownership enables authenticated users to access the chat history of other users through session ID collisions. This cross-user information disclosure can be exploited via multiple authenticated API endpoints, including '/api/v1/run/*', '/api/v1/responses', and '/api/v2/workflow/*'. The vulnerability is present only in multi-user deployments with 'LANGFLOW_AUTO_LOGIN' set to false.
Users are advised to upgrade to IBM Langflow OSS version 1.11.0 or newer.
Metrics
CVSS 4.0 Severity and Vector Strings:
No CVSS 4.0 data is available for this CVE.
CVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
CISA-ADP
Assessed Aug 5, 2026References to Advisories, Solutions, and Tools
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| URL | Source(s) | Tag(s) |
|---|---|---|
| https://www.ibm.com/support/pages/node/7282647 | [email protected] | Vendor Advisory |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| NVD-CWE-noinfo | Insufficient Information to Classify Weakness | [email protected] |
| CWE-639 | Authorization Bypass Through User-Controlled Key | CISA-ADP |
Affected Products
| Product | Versions |
|---|---|
| langflow langflow | >= 1.0.0, < 1.11.0 |
CPE
Remediation
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Change History
4 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Aug 7, 2026 | CVE Modified | CISA-ADP |
| Aug 6, 2026 | Initial Analysis | [email protected] |
| Aug 5, 2026 | CVE Modified | CISA-ADP |
| Aug 5, 2026 | New CVE Received | [email protected] |