CVE-2026-91935

High

Description

Flowise before 3.1.4 fails to validate baseURL parameters in chat-model nodes, allowing authenticated users to redirect requests to arbitrary hosts. Attackers with chatflows:create or chatflows:update permissions can exfiltrate LLM provider API keys by redirecting requests to cloud metadata services or internal hosts.

SeverityHigh

CVSS8.3

Exploit probability—

ProductFlowise

PublishedSep 15, 2026

First seenSep 15, 2026

Weakness typeCWE-918Server-side request forgery (SSRF)

How to fix

Update

FlowiseAI Flowise3.1.4 or later

Vendor advisories

github.com/FlowiseAI/Flowise/security/advisories/GHSA-hx55-h48h-7rw9

Affected products

Product	Affected versions	Fixed in
FlowiseAI Flowise	v < 3.1.4	3.1.4

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