CVE-2026-67620 (GCVE-0-2026-67620)

Vulnerability from cvelistv5 – Published: 2026-08-08 16:03 – Updated: 2026-08-14 16:51 X_Open Source Unsupported When Assigned
VLAI
Title
Flowise 3.1.4 SSRF via fetch-links Endpoint Incomplete Deny-List
Summary
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 endpoint with a crafted URL parameter, bypassing deny-list validation including redirect-based bypasses, to reach instance metadata services and expose instance identity data and role credentials on Oracle Cloud Infrastructure or Alibaba Cloud deployments, with unauthenticated access possible when URL-fetching nodes exist in public chatflows.
Severity
6.3 (Medium)
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:N/SC:H/SI:N/SA:N
7.7 (High)
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N
SSVC
Exploitation: poc Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-10 13:39 UTC
CWE
  • CWE-918 - Server-Side Request Forgery (SSRF)
Assigner
VulnCheck CNA under the mitre root
CNA scorecard B 84/100 over 7155 records in the last 180 days details
References
Impacted products
Vendor Product Version CPE status
FlowiseAI Flowise Affected: 0 , ≤ 3.1.4 (semver)
    cpe:2.3:a:flowiseai:flowise:*:*:*:*:*:*:*:*
Create a notification for this product.
Date Public
2026-08-04 00:00
Credits
Bobur Abdugafforov (Mahadsec)
Show details on NVD website
To clipboard 

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