Flowise 3.1.4 SSRF via fetch-links Endpoint Incomplete Deny-List
Key facts
- Attack vector
- Network
- Privileges required
- Low
- User interaction
- None
- Attack complexity
- Low
- Attack requirements
- None
- Impact type
- —
- Confidentiality · integrity · availability
- None · None · None
- Fix status
- No fix listed
Attack profile from CVSS 4.0 · CNA. Fix status from CNA.
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.
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- Poc
- Automatable
- No
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
Remediation
No fixed version listed by the sources yet.
Fixed in the same release
Records fixed by the same vendor advisory or release, as the CNA lists them.
- Advisory ·
FlowiseAI Flowise — flowiseai.com/sunset
5 records Highest priority Priority HIGH 4 HIGH, 1 MEDIUM
Other records, highest priority first
- TI-2026-50257 Flowise 2.2.4 - 3.1.4 Missing Authorization via openai-assistants-file/downloadPriority HIGH 77
- TI-2026-49346 Flowise 3.1.4 Authentication Bypass via OAuth2 Credential Refresh EndpointPriority HIGH 77
- TI-2026-47775 Flowise 3.1.4 IDOR in OpenAI Assistants IntegrationPriority HIGH 72
Timeline
- 2026-10-02 Threatist record created from CVE-2026-67620
- 2026-10-03 Alias added: GHSA-6h53-jfj2-fh9c
References
Exploit 1
Advisory 1
More FlowiseAI Flowise vulnerabilities
- TI-2025-37059 Flowise has Remote Code Execution vulnerability CVSS 3.1CRITICAL 10.0
- TI-2025-36193 Flowise Cloud and Local Deployments have Unauthenticated Password Reset Token Disclosure that Leads to Account Takeover CVSS 3.1CRITICAL 9.8
- TI-2025-08190 Unsupervised OS command execution leads to remote code execution by unauthenticated network attackers CVSS 3.1CRITICAL 9.8
- TI-2026-51595 Flowise before 3.1.3 Sandbox Escape via Puppeteer CVSS 4.0CRITICAL 9.4
- TI-2026-49250 Flowise: CSV Agent Prompt Injection Remote Code Execution Vulnerability CVSS 4.0CRITICAL 9.5
- TI-2025-43459 Flowise through 2.2.7 - Arbitrary File Write to Remote Code Execution via document-store API CVSS 4.0CRITICAL 10.0
Sources
- CVE-2026-67620 · CVE Program
- CVE-2026-67620 · NVD
- FIRST EPSS
- GHSA-6h53-jfj2-fh9c · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences