Flowise: Authenticated remote code execution

A critical vulnerability has been identified in Flowise that enables an authenticated remote attacker to execute arbitrary code within the context of the service. The vulnerability stems from an insecure implementation that permits the bypass of existing security controls. As of this report, the vulnerability remains unpatched.

Impact

An attacker successfully exploiting this vulnerability gains the ability to execute arbitrary code with the same privileges as the underlying Flowise service, potentially leading to full application compromise, data exfiltration, or further lateral movement within the environment.

Recommendation

• Inventory all internet-facing or internal instances of Flowise within the infrastructure.
• Implement strict network segmentation to limit access to the Flowise management interface to trusted administrative subnets only.
• Monitor logs for unusual authentication activity followed by service-level process execution.
• Follow the vendor communication channels and prioritize the application of security updates once a patch is released.