CVE-2026-70471 FlowiseAI CVE debrief

Who should care

Flowise users and administrators, security teams responsible for LLM flows and sensitive data protection, operators managing Flowise deployments, and vulnerability management teams. These stakeholders should assess exposure, apply patches, and review workspace Variables configuration to minimize sensitive data exposure.

Why it matters

CVE-2026-70471 Flowise Variables API bypass allows unauthorized exposure of sensitive workspace variables, requiring immediate attention from Flowise users and administrators

• Potential exposure of sensitive data such as database passwords, JWT secrets, SMTP passwords, and cloud keys
• Bypass of Variables API permission checks, allowing unauthorized access to workspace variables
• Possible impact on security and compliance due to sensitive data exposure
• Verification of patch deployment and configuration updates required

Technical summary

Flowise versions prior to 3.1.3 inject $vars into code execution sandbox without requiring variables:view permission, allowing unauthorized exposure of sensitive workspace variables. Affected product context: Flowise drag-and-drop user interface for building customized large language model (LLM) flows. Defensive impact: Immediate attention required for Flowise users and administrators to prevent potential exposure of sensitive data. Source-grounded technical framing: CVE record and NVD entry provide authoritative details.

Defensive priority

High-priority assessment and remediation recommended for Flowise users

Recommended defensive actions

• Assess exposure by verifying if Flowise versions prior to 3.1.3 are in use
• Restrict access to Variables API and enforce variables:view permission
• Review and update workspace Variables configuration to minimize sensitive data exposure
• Apply patch version 3.1.3 or later
• Verify patch deployment and configuration updates
• Monitor relevant logs for exposed assets
• Track exceptions and retest remediated assets

Evidence notes

The CVE record and NVD entry provide details on the vulnerability. Source references offer patch information for version 3.1.3. Defenders should verify patch deployment and configuration updates. Evidence limits: Supplied CVE and NVD entries provide authoritative details. Affected scope: Flowise versions prior to 3.1.3. Unknown affected scope: None reported.

Sources and references

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.