CVE-2026-9130 Langflow OSS is affected by arbitrary code execution in custom component validation and trusted code enforcement
Authenticated users can access other users' chat history in multi-user Langflow deployments due to missing ownership validation in memory components.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-9130?
CVE-2026-9130 is a high-severity missing authorization vulnerability in Langflow Langflow, published on 5 Aug 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official 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.
Weakness: CWE-639
Which versions are affected by CVE-2026-9130?
It affects 1 product.
Products include Langflow Langflow.
How do I fix CVE-2026-9130?
No fix has been published for CVE-2026-9130 yet. Limit exposure of the affected software until one is available.
Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.
Is CVE-2026-9130 being exploited?
There is no known exploitation of CVE-2026-9130 in the wild and no public exploit code.
Other vulnerabilities in Langflow Langflow
Sources
Also known as GHSA-vph6-jp7f-x3cx.