CVE-2026-67620: Flowise through 3.1.4 contains a server-side request forgery vulnerability in the SSRF guard implemented in ht

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HIGH 7.7UPGRADE

CVE-2026-67620 is a high-severity flaw (CVSS 7.7) affecting flowise. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Flowise through 3.1.4 contains a server-side request forgery vulnerability in the SSRF guard implemented in httpSecurity.ts, where the DEFAULT_DENY_LIST omits the Oracle Cloud Infrastructure metadata endpoint 192.0.0.192 and the Alibaba Cloud metadata endpoint 100.100.100.200, allowing authenticated attackers to force the server to issue arbitrary GET requests to cloud instance metadata services. Attackers can send requests to the fetch-links API

Why this priority

High severity
Public exploit reference

A fixed release or distro patch exists.

Risk facts

CVSS score	7.7 (High)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	Low
User interaction	None
EPSS exploit chance	0.5% (top 61%)
CISA exploited list	No
Weakness	CWE-918
Published	2026-08-08
Last modified	2026-10-23

Publisher (CNA): VulnCheck · Vendor: flowiseai

Am I affected?

Timeline

2026-08-08 16:16 UTCPublished CVE record published
2026-10-23 20:10 UTCUpdated Record last modified

flowiseai flowise UPGRADE

Affected: <= 3.1.4

Fixed in: newer than 3.1.4

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy flowise || rpm -q flowise || flowise --version

2. UPGRADE to newer than 3.1.4 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade flowise

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade flowise

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

Exact fixes by distribution

Fedora 46 · clementine · FIXED · 1.4.2-1.fc46 · FEDORA-2026-3e748ef4d3 · source

sudo dnf upgrade --advisory=FEDORA-2026-3e748ef4d3

Public exploits and detection

Public code exists for this CVE. Treat unpatched systems as at risk, and only run PoCs in a lab.

GitHub PoC: abdugafforov-bobur/CVE-2026-67620-poc (1 stars)
Write-up: www.vulncheck.com/advisories/flowise-ssrf-via-fetch-links-endpoint-incomplete-deny-list

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Related CVEs

CVE-2026-69253 HIGH 8.8 UPGRADE Flowise is a drag-and-drop user interface for building customized large language model (LLM) flows
CVE-2026-69254 HIGH 8.8 UPGRADE Flowise is a drag & drop user interface to build a customized large language model flow
CVE-2026-69250 HIGH 7.5 UPGRADE Flowise is a drag & drop user interface to build a customized large language model flow
CVE-2026-69252 HIGH 8.8 UPGRADE Flowise is a drag & drop user interface to build a customized large language model flow
CVE-2026-69264 CRITICAL 9.8 UPGRADE Prior to 3.1.3, Flowise CSVAgent interpolates an attacker-controlled segment of the csvFile data URI directly

References

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