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    CVE-2026-67620

    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.

    Published:Aug 8, 2026
    Last Modified:Aug 14, 2026
    EPS:Aug 8, 2026
    EPSS Score:0.00426
    CVSS Score:7.7

    Affected Products

    Vendor
    Flowiseai
    Product
    Flowise

    Exploits

    https://github.com/abdugafforov-bobur/CVE-2026-67620-pochttps://github.com/abdugafforov-bobur/CVE-2026-67620-poc

    Common Attack Pattern Enumeration and Classification (CAPEC)

    CAPEC-664 Server Side Request Forgery

    Related CVEs

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    CVE-2026-73602 (CVSS 9) — Flowise before 3.1.3 contains a sandbox escape vulnerability in the vm2 JavaScript sandbox that allows authent…
    CVE-2026-73601 (CVSS 9) — Flowise versions before 3.1.3 contain a remote code execution vulnerability in the Custom MCP node when CUSTOM…
    CVE-2026-73488 (CVSS 6) — Flowise versions before 3.1.3 contain an insecure direct object reference vulnerability in the GET /api/v1/org…
    CVE-2026-73487 (CVSS 9) — Flowise before 3.1.3 contains a regex-based Python code validator bypass in CSV and Airtable Agent nodes that …
    CVE-2026-73486 (CVSS 9) — Flowise before 3.1.3 contains a code injection vulnerability in the CSV Agent node's customReadCSV parameter t…
    CVE-2026-73485 (CVSS 9) — Flowise before 3.1.3 contains a code injection vulnerability in the Airtable Agent node that allows unauthenti…
    CVE-2026-73484 (CVSS 8.6) — Flowise before 3.1.3 contains a sandbox escape vulnerability in pythonCodeValidator.ts that fails to block nat…
    CVE-2026-73483 (CVSS 9.4) — Flowise (packages flowise and flowise-components) in versions <= 3.1.2 contain a sandbox escape in the vm2/@fl…

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High