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    CVE-2026-71962

    Flowise versions 2.2.4 through 3.1.4 contain a missing authorization vulnerability in the POST /api/v1/openai-assistants-file/download endpoint that allows unauthenticated attackers to access private files by exploiting the endpoint's inclusion in the global authentication whitelist, which bypasses all session and API key verification. Attackers can supply valid chatflowId, chatId, and fileName identifiers to retrieve files from any chatflow on the instance, including private chatflows belonging to other workspaces or organizations.

    Published:Aug 10, 2026
    Last Modified:Aug 14, 2026
    EPS:Aug 10, 2026
    EPSS Score:0.00448
    CVSS Score:7.5

    Affected Products

    Vendor
    Flowiseai
    Product
    Flowise

    Exploits

    https://gist.github.com/haidang-infosec/402db84bee7aca2f57bb109b31574649?utm_source=chatgpt.com

    Common Weakness Enumeration

    CWE-862 Missing Authorization

    Common Attack Pattern Enumeration and Classification (CAPEC)

    CAPEC-665 Exploitation of Thunderbolt Protection Flaws

    Related CVEs

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    CVE-2026-73603 (CVSS 6.3) — Flowise before 3.1.4 fails to validate chatflow visibility in the unauthenticated text-to-speech endpoint, all…
    CVE-2026-73602 (CVSS 9) — Flowise before 3.1.3 contains a sandbox escape vulnerability in the vm2 JavaScript sandbox that allows authent…
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    CVE-2026-73488 (CVSS 6) — Flowise versions before 3.1.3 contain an insecure direct object reference vulnerability in the GET /api/v1/org…
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    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