Horizon Alert
Summary of the vulnerability and why it matters
A vulnerability exists in Flowise, a tool for building custom large language model interfaces, where a specially crafted prompt can lead to the execution of malicious Python code. This could allow an attacker to run arbitrary commands within the service's environment. The main concern is confirming if your environment uses the affected technology and is exposed.
- Prompt injection allows code execution.
- Critical to verify if your LLM interface is affected.
- Confirm exposure and relevance for your LLM deployments.
Attack Path
How an attacker could exploit the issue
An attacker can exploit this vulnerability by sending a specially crafted prompt to a chatflow that uses a CSV Agent node. If the prompt is accepted, the underlying large language model may generate a malicious Python script. This script can bypass security checks and execute arbitrary code within the application's environment.
- Attacker sends malicious prompt.
- CSV Agent node processes prompt.
- Arbitrary code execution occurs.
Live Threat
Current exploitation, exposure, and threat context
When supported by the advisory, an attacker could send a malicious prompt to a chatflow using a CSV Agent node. This could cause the LLM to generate and execute a Python script, bypassing security checks and running arbitrary code within the service's context.
- Arbitrary code execution in service account.
- Malicious script bypasses validation.
- Compromise of service and its data.
Operational Fix
Recommended remediation, mitigation, and detection steps
Ownership of this vulnerability likely resides with the team managing the Flowise application and its underlying LLM integrations. The first critical step is to identify all instances of Flowise, determine their exposure and business criticality, and then confirm the accountable owner for each. This will inform a prioritized remediation plan.
- Assign ownership to Flowise application managers.
- Verify Flowise deployment exposure and criticality.
- Plan and coordinate vendor-supported updates.
