CVE-2026-54037

{
  "id": "CVE-2026-54037",
  "sourceIdentifier": "[email protected]",
  "published": "2026-06-25T17:16:41.000",
  "lastModified": "2026-10-25T22:10:00.150",
  "vulnStatus": "Analyzed",
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "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."
    },
    {
      "lang": "es",
      "value": "LibreChat es un clon mejorado de ChatGPT que soporta múltiples proveedores de IA. Antes de la versión 0.8.4-rc1, la corrección para CVE-2025-7105 añadió los limitadores de tasa forkIpLimiter y forkUserLimiter a POST /API/convos/fork para prevenir la duplicación rápida de conversaciones. Sin embargo, el endpoint POST /API/convos/duplicate - que está en el mismo archivo y realiza exactamente las mismas operaciones costosas de base de datos - no se le aplicó ningún limitador de tasa. Un usuario autenticado puede eludir la corrección de CVE-2025-7105 usando /duplicate en lugar de /fork para agotar los recursos del servidor. Esta vulnerabilidad está corregida en la versión 0.8.4-rc1."
    }
  ],
  "affected": [
    {
      "source": "[email protected]",
      "affectedData": [
        {
          "vendor": "danny-avila",
          "product": "LibreChat",
          "versions": [
            {
              "version": "< 0.8.4-rc1",
              "status": "affected"
            }
          ]
        }
      ]
    }
  ],
  "metrics": {
    "cvssMetricV31": [
      {
        "source": "[email protected]",
        "type": "Secondary",
        "cvssData": {
          "version": "3.1",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
          "baseScore": 6.5,
          "baseSeverity": "MEDIUM",
          "attackVector": "NETWORK",
          "attackComplexity": "LOW",
          "privilegesRequired": "LOW",
          "userInteraction": "NONE",
          "scope": "UNCHANGED",
          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
          "availabilityImpact": "HIGH"
        },
        "exploitabilityScore": 2.8,
        "impactScore": 3.6
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "timestamp": "2026-06-25T18:18:00.563402Z",
          "id": "CVE-2026-54037",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "role": "CISA Coordinator",
          "version": "2.0.3"
        }
      }
    ]
  },
  "weaknesses": [
    {
      "source": "[email protected]",
      "type": "Secondary",
      "description": [
        {
          "lang": "en",
          "value": "CWE-770"
        }
      ]
    }
  ],
  "configurations": [
    {
      "nodes": [
        {
          "operator": "OR",
          "negate": false,
          "cpeMatch": [
            {
              "vulnerable": true,
              "criteria": "cpe:2.3:a:librechat:librechat:*:*:*:*:*:*:*:*",
              "versionEndIncluding": "0.8.3",
              "matchCriteriaId": "77B80F25-E7C2-442E-98E3-F4462C40C74F"
            }
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  ],
  "references": [
    {
      "url": "https://github.com/danny-avila/LibreChat/security/advisories/GHSA-g445-9wq6-jf3v",
      "source": "[email protected]",
      "tags": [
        "Exploit",
        "Vendor Advisory"
      ]
    }
  ]
}