FlowiseAI's Flowise is a drag-and-drop interface for building customized large language model workflows. Prior to version 3.0.13, Flowise contained an authorization bypass vulnerability classified as CWE-639 (Authorization Bypass Through User-Controlled Key) and CWE-862 (Missing Authorization). This vulnerability manifests as an Insecure Direct Object Reference (IDOR), where the application fails to properly verify user permissions when accessing or modifying resources identified by user-controlled keys. An attacker with limited privileges can exploit this flaw to escalate their access, potentially taking over other user accounts and bypassing enterprise-level features such as Single Sign-On (SSO) configurations. The vulnerability is remotely exploitable over the network without user interaction, requiring only limited privileges, which increases its risk profile. The CVSS v3.0 score of 8.8 reflects the high impact on confidentiality, integrity, and availability, as attackers can fully compromise accounts and critical configurations. The flaw was addressed and patched in Flowise version 3.0.13, which enforces proper authorization checks on user-controlled keys to prevent unauthorized access and privilege escalation.

The impact of CVE-2026-30823 is significant for organizations using vulnerable versions of Flowise. Attackers can achieve account takeover, leading to unauthorized access to sensitive data, manipulation of workflows, and disruption of services. The bypass of enterprise features like SSO configuration can undermine organizational security policies, allowing attackers to circumvent authentication controls and potentially pivot to other internal systems. This can result in data breaches, loss of intellectual property, and operational downtime. Enterprises relying on Flowise for critical AI workflow management face risks to confidentiality, integrity, and availability. The vulnerability's ease of exploitation and high impact make it a critical concern, especially for organizations with multiple users and complex access control requirements.

Organizations should immediately upgrade Flowise to version 3.0.13 or later, where the vulnerability is patched. In addition to upgrading, administrators should audit user permissions and SSO configurations to detect any unauthorized changes or suspicious activity that may have occurred prior to patching. Implement strict access control policies and monitor logs for unusual access patterns related to user-controlled keys. Employ network segmentation to limit exposure of Flowise instances and restrict access to trusted users only. Regularly review and test authorization mechanisms within the application to ensure no similar IDOR vulnerabilities exist. Finally, maintain an incident response plan to quickly address any suspected exploitation attempts.