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    CVE-2026-54037

    LibreChat is an enhanced ChatGPT clone that supports multiple AI providers. Prior to 0.8.4-rc1, the fix for CVE-2025-7105 added forkIpLimiter and forkUserLimiter rate limiters to POST /api/convos/fork to prevent rapid-fire conversation duplication. However, the POST /api/convos/duplicate endpoint — which is in the same file and performs the exact same expensive database operations — was not given any rate limiter. An authenticated user can bypass the CVE-2025-7105 fix by using /duplicate instead of /fork to exhaust server resources. This vulnerability is fixed in 0.8.4-rc1.

    Published:Jun 25, 2026
    Last Modified:Jun 25, 2026
    EPS:Jun 25, 2026
    EPSS Score:
    CVSS Score:6.5

    Affected Products

    Vendor
    Danny-avila
    Product
    Libre Chat

    Exploits

    https://github.com/danny-avila/LibreChat/security/advisories/GHSA-g445-9wq6-jf3v

    Related CVEs

    CVE-2026-54024 (CVSS 6.5) — LibreChat is an enhanced ChatGPT clone that supports multiple AI providers. Prior to 0.8.4-rc1, the fix for CV…
    CVE-2026-54025 (CVSS 5.4) — LibreChat is an enhanced ChatGPT clone that supports multiple AI providers. Prior to 0.8.4-rc1, there is a vul…
    CVE-2026-54027 (CVSS 6.5) — LibreChat is an enhanced ChatGPT clone that supports multiple AI providers. Prior to 0.8.4-rc1, the POST /api/…
    CVE-2026-54029 (CVSS 5.3) — LibreChat is an enhanced ChatGPT clone that supports multiple AI providers. Prior to 0.8.4-rc1, the DELETE /ap…
    CVE-2026-54033 (CVSS 7.7) — LibreChat is an enhanced ChatGPT clone that supports multiple AI providers. Prior to 0.8.4-rc1, LibreChat allo…
    CVE-2026-54030 (CVSS 8) — LibreChat is an enhanced ChatGPT clone that supports multiple AI providers. Prior to 0.8.5, LibreChat's MCP OA…
    CVE-2026-54040 (CVSS 5.9) — LibreChat is an enhanced ChatGPT clone that supports multiple AI providers. Prior to 0.8.4-rc1, the POST /api/…
    CVE-2026-54036 (CVSS 5.3) — LibreChat is an enhanced ChatGPT clone that supports multiple AI providers. Prior to 0.8.4-rc1, the GET /api/a…
    CVE-2026-44654 (CVSS 5.7) — LibreChat is an enhanced ChatGPT clone that supports multiple AI providers. In versions up to and including 0.…
    CVE-2026-44653 (CVSS 6.5) — LibreChat is an enhanced ChatGPT clone that supports multiple AI providers. In versions up to and including 0.…

    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