A Server-Side Request Forgery vulnerability in FlowiseAI Flowise versions prior to 3.1.0 poses a significant risk of data exfiltration and internal network reconnaissance.

This vulnerability is a Server-Side Request Forgery (CWE-918) flaw located in the POST/GET API Chain components, which can be triggered by unauthenticated attackers to conduct unauthorized requests against internal and external infrastructure.

The ability to perform Server-Side Request Forgery allows an attacker to interact with internal services that are typically shielded from the public internet. This can lead to the exposure of sensitive internal data, unauthorized access to private APIs, or the mapping of internal network architecture, resulting in severe reputational and operational damage. Given the CVSS score of 8.3, this vulnerability is classified as High severity and requires immediate attention to prevent exploitation.

Immediate Action: Upgrade both the flowise and flowise-components packages to version 3.1.0 or later to apply the necessary security patch.

Proactive Monitoring: Review web server and API access logs for anomalous outbound traffic patterns or requests directed toward internal IP ranges.

Compensating Controls: Deploy a Web Application Firewall (WAF) configured to block suspicious API requests and restrict outbound traffic from the application server to prevent unauthorized internal network access.

Public Exploit Available: No — there is no confirmed public exploit available; the available data does not indicate a weaponized exploit or public proof-of-concept.

The presence of a proof-of-concept and the high CVSS score necessitate immediate remediation. Security teams should prioritize updating their Flowise deployments to version 3.1.0 to close the SSRF vector, as this flaw provides a direct path for attackers to compromise internal resources that would otherwise be inaccessible.