---
title: "CVE-2026-91938: Flowise - Server-Side Request Forgery"
description: "Flowise < 3.1.4 contains a server-side request forgery caused by bypassing SSRF protection in Cheerio, Playwright, and Puppeteer document loader nodes, letting attackers fetch internal and cloud metadata URLs, exploit requires attacker to provide arbitrary URLs."
url: https://panop.io/threat-heartbeat/CVE-2026-91938/
---

# CVE-2026-91938 Flowise - Server-Side Request Forgery

Flowise < 3.1.4 contains a server-side request forgery caused by bypassing SSRF protection in Cheerio, Playwright, and Puppeteer document loader nodes, letting attackers fetch internal and cloud metadata URLs, exploit requires attacker to provide arbitrary URLs.

CVSS base score 7.1 /10

High

CISA KEV

Not listed

Public exploit

None known

Authentication

Required

EPSS

0.37% chance of exploitation in 30 days

[View the NVD record ↗](https://nvd.nist.gov/vuln/detail/CVE-2026-91938)

## Details

Type

Server-Side Request Forgery

Impact

Server Side Request Forgery, Information Disclosure

CVSS vector

CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:L

Published

15 September 2026

Updated

15 October 2026

Weakness

[CWE-918](https://cwe.mitre.org/data/definitions/918.html)

## Vendor fix

Update to version 3.1.4 or later.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

## References

- [https://nvd.nist.gov/vuln/detail/CVE-2026-91938](https://nvd.nist.gov/vuln/detail/CVE-2026-91938)
- [https://github.com/FlowiseAI/Flowise/security/advisories/GHSA-9cvr-5wv9-2gxr](https://github.com/FlowiseAI/Flowise/security/advisories/GHSA-9cvr-5wv9-2gxr)
- [https://www.vulncheck.com/advisories/flowise-before-3.1.4-server-side-request-forgery-via-document-loaders](https://www.vulncheck.com/advisories/flowise-before-3.1.4-server-side-request-forgery-via-document-loaders)

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## What this record can't tell you

- Whether you run the affected software, and where
- Whether an attacker can actually reach and exploit it
- The misconfigurations that never get a CVE number
- What it would cost the business, ranked into what to fix first

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