{"items":[{"id":"NVI-00016272","kind":"vulnerability","title":"Langflow: IDOR/BOLA in Monitor API — Missing Ownership Enforcement on 7 Endpoints ","revision":1,"unknowns":["Customer inventory, deployment, reachability and exploitation have not been inspected."],"lifecycle":"active","identifiers":["GHSA-9c59-2mvc-vfr8","CVE-2026-33760"],"plain_summary":"GitHub lists this reviewed advisory for langflow. Published version ranges and source prerequisites are shown below; this is not an inspection of a visitor’s application.","review_status":"source_listed","control_topics":[],"public_actions":[{"summary":"Identify the exact component and deployed version, examine the linked publisher’s conditions, and retain evidence of any mitigation.","source_ids":["sr-5c3363fef607673a150b29bab2d3c559"],"action_type":"investigate","limitations":"Confirm current vendor support, compatibility and deployment evidence. This report has not tested a fix in your system.","current_supported_target":null}],"schema_version":"1.1.0","source_metrics":[{"kind":"CVSS","as_of":"2026-07-20T13:40:35.000Z","value":"8.8 high","meaning":"GitHub source severity; exploitability and local consequence require separate evidence.","source_id":"sr-5c3363fef607673a150b29bab2d3c559"}],"why_it_matters":"Published affected context helps an owner decide what evidence to gather. This report has not examined your application.","related_sources":[{"id":"sr-5c3363fef607673a150b29bab2d3c559","url":"https://github.com/advisories/GHSA-9c59-2mvc-vfr8","basis":"vendor_advisory","notes":"GitHub Advisory Database; CC-BY-4.0. Each advisory links its original attribution. Null normalizes fields.","title":"GHSA-9c59-2mvc-vfr8","publisher":"GitHub Advisory Database","observed_at":"2026-11-04T02:49:06.528Z"}],"affected_context":[{"certainty":"source_listed","source_ids":["sr-5c3363fef607673a150b29bab2d3c559"],"technology":"langflow","known_exclusions":[],"conditions_summary":"### Summary\n\nLangflow's `/api/v1/monitor` router exposes 7 endpoints that perform read, write, and delete operations on user-owned resources — messages, sessions, build artifacts, and LLM transaction logs — without verifying that the authenticated requester owns the targeted resource. Any authenticated user can read, modify, rename, or permanently delete another user's data by supplying the target's resource ID or `flow_id`. This is a classic IDOR/BOLA vulnerability. Notably, the same source file (`monitor.py`) contains one correctly-implemented endpoint that uses an ownership check, demonstrating the correct pattern was known but inconsistently applied.\n\n\n### Details\n\n**Source file: `src/backend/base/langflow/api/v1/monitor.py`**\n\nThe correct pattern (used only in `GET /monitor/messages`, lines 77–80):\n```python\nstmt = select(MessageTable)\nstmt = stmt.join(Flow, MessageTable.flow_id == Flow.id)\nstmt = stmt.where(Flow.user_id == current_user.id)  # ownership enforced\n```\n\nAll 7 vulnerable endpoints are missing this guard:\n\n**1. `GET /api/v1/monitor/builds` (lines 27–33)** — reads build data for any `flow_id`:\n```python\n@router.get(\"/builds\", dependencies=[Depends(get_current_active","public_affected_ranges":["< 1.9.0"]}],"null_published_at":"2026-11-04T10:04:27.925Z","source_updated_at":"2026-07-20T13:40:35.000Z","source_disclosed_at":"2026-06-16T17:34:21.000Z","is_synthetic_fixture":false,"null_last_reviewed_at":null,"public_change_summary":"First indexed by Null; source disclosure date is shown separately.","null_first_observed_at":"2026-11-04T02:49:06.528Z"}],"next_cursor":null,"snapshot_revision":"42594"}