What’s Vulnerable › Vulnerabilities

CVE-2026-56275: Flowise - Server-Side Request Forgery via Execute Flow Base URL

• Severity: high (CVSS 7.1 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.3% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2026-06-23 · updated 2026-10-25
• Weakness: CWE-918

Description

Flowise before 3.1.0 contains a server-side request forgery vulnerability in the Execute Flow node that allows attackers to bypass security validation by providing intranet addresses through the base URL field. Attackers can initiate HTTP requests to internal network addresses, access cloud metadata, and enumerate internal services by exploiting the missing secureFetch verification in httpSecurity.ts.

Affected products

• FlowiseAI Flowise: before 3.1.0 — fixed in 3.1.0

How to fix

Upgrade to a fixed version: FlowiseAI Flowise 3.1.0. Check the vendor advisory for mitigations.

References

• https://github.com/FlowiseAI/Flowise/security/advisories/GHSA-9hrv-gvrv-6gf2
• https://www.vulncheck.com/advisories/flowise-server-side-request-forgery-via-execute-flow-base-url

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