CVE-2026-67620Public exploitNetwork attack vectorHinoki check available

Cloud credential disclosure via incomplete metadata deny-list

Published Aug 8, 2026 · Updated Aug 8, 2026

Server-side request forgery in Flowise through 3.1.4 allows remote authenticated users to read cloud instance metadata via crafted URLs. The DEFAULT_DENY_LIST in packages/components/src/httpSecurity.ts omits 192.0.0.192 and 100.100.100.200, so fetch-links and other secureFetch callers issue GET requests to those metadata services. Exposure requires an Oracle Cloud Infrastructure or Alibaba Cloud deployment; public chatflows containing URL-fetching nodes also make the path reachable without authentication and can disclose instance identity data or role credentials.

CVSS severity6.3
Medium
EPSS probability0.32%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkAvailable
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Summary

What happened

Server-side request forgery in Flowise through 3.1.4 allows remote authenticated users to read cloud instance metadata via crafted URLs. The DEFAULT_DENY_LIST in packages/components/src/httpSecurity.ts omits 192.0.0.192 and 100.100.100.200, so fetch-links and other secureFetch callers issue GET requests to those metadata services. Exposure requires an Oracle Cloud Infrastructure or Alibaba Cloud deployment; public chatflows containing URL-fetching nodes also make the path reachable without authentication and can disclose instance identity data or role credentials.

The record

CVE
CVE-2026-67620
Published
Aug 8, 2026
Updated
Aug 8, 2026
Vendor
FlowiseAI
Product
Flowise
Classifications
CWE-918, T1552.005
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Aug 8, 2026CVE publishedPublication date reported by the CVE source.
  2. Aug 8, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=0 <=3.1.4

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

FlowiseAI · Flowiseversion=0 <=3.1.4

Published CVSS scores

6.3VulnCheck CNACVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:N/SC:H/SI:N/SA:N
7.7VulnCheck CNACVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-918Server-Side Request Forgery (SSRF)
T1552.005Unsecured Credentials: Cloud Instance Metadata API

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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