Description (CNA)
Langflow is a tool for building and deploying AI-powered agents and workflows. Prior to version 1.5.1, the `_read_flow` helper in `src/backend/base/langflow/api/v1/flows.py` branched on the `AUTO_LOGIN` setting to decide whether to filter by `user_id`. When `AUTO_LOGIN` was `False` (i.e., authentication was enabled), neither branch enforced an ownership check — the query returned any flow matching the given UUID regardless of who owned it. This allowed any authenticated user to read any other user's flow, including embedded plaintext API keys; modify the logic of another user's AI agents, and/or delete flows belonging to other users. The vulnerability was introduced by the conditional logic that was meant to accommodate public/example flows (those with `user_id = NULL`) under auto-login mode, but inadvertently left the authenticated path without an ownership filter. The fix in version 1.5.1 removes the `AUTO_LOGIN` conditional entirely and unconditionally scopes the query to the requesting user.
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| langflow-ai / langflow | affected < 1.5.1 |
| langflow-ai / langflow-base | affected < 0.5.1 |
CWE
CWE-639, CWE-862
References
- https://github.com/langflow-ai/langflow/security/advisories/GHSA-8c4j-f57c-35cf
- https://github.com/langflow-ai/langflow/pull/8956
ADP enrichment
No English description supplied.
No references supplied.