| Título | Langflow <= 1.8.3 Information Disclosure |
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| Descripción | # Technical Details
An Information Disclosure vulnerability exists in Langflow. The application fails to properly redact sensitive credentials when exporting flow JSON files due to flawed logic in the `remove_api_keys` utility.
The application only strips values if the field is marked as `password=True` AND its name strictly contains "api" AND ("key" or "token"). If a sensitive field is just named `password`, `secret_value`, or `db_password`, the redaction logic is completely bypassed, leaking the plain-text secret.
# Vulnerable Code
File: `src/backend/base/langflow/api/utils/core.py`
Method: `remove_api_keys()` and helper `has_api_terms()`
Why: Custom or generic sensitive fields (like database passwords or unrelated secrets) that do not match the restrictive `has_api_terms` naming heuristic are ignored by the redactor, even if they are explicitly flagged with `password=True` in the schema.
# Reproduction
1. An attacker (or regular user) creates a flow containing a sensitive field (e.g. named "password") with `password=True`.
2. The user stores a highly sensitive string such as "SUPER_SECRET_VALUE" in this field.
3. The user downloads the flow using the API (`POST /api/v1/flows/download/`).
4. The downloaded JSON file reveals the raw plain-text secret "SUPER_SECRET_VALUE", as the `remove_api_keys` function wrongly decided to leave it intact.
# Impact
- Exposure of Sensitive Information: Database credentials, third-party service secrets, and other confidential data are leaked in exported JSON files.
- Unauthorized actors gaining access to these flow exports can extract plaintext credentials and pivot to attack integrated external infrastructure.
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| Fuente | ⚠️ https://gist.github.com/chenhouser2025/b93261c6e651f14800a4f2e4365f357b |
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| Usuario | Eric-d (UID 96861) |
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| Sumisión | 2026-03-28 14:36 (hace 23 días) |
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| Moderación | 2026-04-19 15:47 (22 days later) |
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| Estado | Aceptado |
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| Entrada de VulDB | 358232 [langflow-ai langflow hasta 1.8.3 Flow Using API core.py remove_api_keys/has_api_terms escalada de privilegios] |
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| Puntos | 20 |
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