FKIE_CVE-2025-8849

Vulnerability from fkie_nvd - Published: 2025-10-31 00:15 - Updated: 2026-10-07 21:10
Severity
7.5 (High) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Summary
LibreChat version 0.7.9 is vulnerable to a Denial of Service (DoS) attack due to unbounded parameter values in the `/api/memories` endpoint. The `key` and `value` parameters accept arbitrarily large inputs without proper validation, leading to a null pointer error in the Rust-based backend when excessively large values are submitted. This results in the inability to create new memories, impacting the stability of the service.
References
security@huntr.devhttps://github.com/danny-avila/librechat/commit/edf33bedcbb08c33e59df76f06454ed7efd896f9Patch
security@huntr.devhttps://huntr.com/bounties/e9d9404c-cd19-4226-a580-9cba14b7d7d6Exploit, Mitigation, Third Party Advisory
Impacted products
Vendor Product Version
librechat librechat 0.7.9
To clipboard 

{
  "affected": [
    {
      "affectedData": [
        {
          "product": "danny-avila/librechat",
          "vendor": "danny-avila",
          "versions": [
            {
              "lessThan": "v0.8.0-rc2",
              "status": "affected",
              "version": "unspecified",
              "versionType": "custom"
            }
          ]
        }
      ],
      "source": "security@huntr.dev"
    }
  ],
  "configurations": [
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:librechat:librechat:0.7.9:-:*:*:*:*:*:*",
              "matchCriteriaId": "74A99A2E-023B-4C39-9696-61DA01C9284E",
              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
        }
      ]
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "LibreChat version 0.7.9 is vulnerable to a Denial of Service (DoS) attack due to unbounded parameter values in the `/api/memories` endpoint. The `key` and `value` parameters accept arbitrarily large inputs without proper validation, leading to a null pointer error in the Rust-based backend when excessively large values are submitted. This results in the inability to create new memories, impacting the stability of the service."
    },
    {
      "lang": "es",
      "value": "LibreChat versi\u00f3n 0.7.9 es vulnerable a un ataque de denegaci\u00f3n de servicio (DoS) debido a valores de par\u00e1metros sin l\u00edmites en el endpoint \u0027/api/memories\u0027. Los par\u00e1metros \u0027key\u0027 y \u0027value\u0027 aceptan entradas arbitrariamente grandes sin una validaci\u00f3n adecuada, lo que lleva a un error de puntero nulo en el backend basado en Rust cuando se env\u00edan valores excesivamente grandes. Esto resulta en la incapacidad de crear nuevas memorias, lo que afecta la estabilidad del servicio."
    }
  ],
  "id": "CVE-2025-8849",
  "lastModified": "2026-10-07T21:10:00.200",
  "metrics": {
    "cvssMetricV30": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "LOW",
          "baseScore": 5.4,
          "baseSeverity": "MEDIUM",
          "confidentialityImpact": "NONE",
          "integrityImpact": "LOW",
          "privilegesRequired": "LOW",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:L",
          "version": "3.0"
        },
        "exploitabilityScore": 2.8,
        "impactScore": 2.5,
        "source": "security@huntr.dev",
        "type": "Secondary"
      }
    ],
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "HIGH",
          "baseScore": 7.5,
          "baseSeverity": "HIGH",
          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
          "privilegesRequired": "NONE",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
          "version": "3.1"
        },
        "exploitabilityScore": 3.9,
        "impactScore": 3.6,
        "source": "nvd@nist.gov",
        "type": "Primary"
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2025-8849",
          "options": [
            {
              "exploitation": "poc"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "role": "CISA Coordinator",
          "timestamp": "2025-10-31T14:59:52.273037Z",
          "version": "2.0.3"
        }
      }
    ]
  },
  "published": "2025-10-31T00:15:37.480",
  "references": [
    {
      "source": "security@huntr.dev",
      "tags": [
        "Patch"
      ],
      "url": "https://github.com/danny-avila/librechat/commit/edf33bedcbb08c33e59df76f06454ed7efd896f9"
    },
    {
      "source": "security@huntr.dev",
      "tags": [
        "Exploit",
        "Mitigation",
        "Third Party Advisory"
      ],
      "url": "https://huntr.com/bounties/e9d9404c-cd19-4226-a580-9cba14b7d7d6"
    }
  ],
  "sourceIdentifier": "security@huntr.dev",
  "vulnStatus": "Analyzed",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-400"
        }
      ],
      "source": "security@huntr.dev",
      "type": "Secondary"
    }
  ]
}



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