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.
Advisories
No advisories yet.
Fixes
Solution
IBM recommends upgrading to Langflow OSS 1.11.0 or newer https://github.com/langflow-ai/langflow/releases
Workaround
No workaround given by the vendor.
References
| Link | Providers |
|---|---|
| https://www.ibm.com/support/pages/node/7282647 |
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History
Wed, 05 Aug 2026 18:30:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| 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. | |
| Title | Langflow OSS is affected by arbitrary code execution in custom component validation and trusted code enforcement | |
| First Time appeared |
Ibm
Ibm langflow Oss |
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| CPEs | cpe:2.3:a:ibm:langflow_oss:1.0.0:*:*:*:*:*:*:* cpe:2.3:a:ibm:langflow_oss:1.10.3:*:*:*:*:*:*:* |
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| Vendors & Products |
Ibm
Ibm langflow Oss |
|
| References |
| |
| Metrics |
cvssV3_1
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Projects
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Status: PUBLISHED
Assigner: ibm
Published:
Updated: 2026-08-05T18:16:05.828Z
Reserved: 2026-05-20T18:05:00.910Z
Link: CVE-2026-9130
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OpenCVE Enrichment
Updated: 2026-08-05T19:30:05Z
Weaknesses
No weakness.