CVE-2026-56275 · Symaro Security Advisory

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.

Severity (CVSS)

Base score	6
Severity	Medium
Version	CVSS 4.0
Vector	CVSS:4.0/AV:N/AC:H/AT:N/PR:L/UI:N/VC:H/VI:L/VA:N/SC:N/SI:N/SA:N
Provided by	CNA

Weaknesses

CWE-918 — Server-Side Request Forgery (SSRF)

Affected products

Vendor	Product	Versions
Flowise	Flowise	0 to <3.1.0; 3.1.0
Flowise	Flowise	0 to <3.1.0; 3.1.0

References

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

Authoritative sources

This page is a snapshot. For the latest enrichment and updates, view the record on CVE.org or the NVD.

Generated from the official CVE List on 24 Jun 2026 09:35 UTC.