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CVE-2025-68480

Full vulnerability record from the local CVENow database.

Description

Marshmallow is a lightweight library for converting complex objects to and from simple Python datatypes. In versions from 3.0.0rc1 to before 3.26.2 and from 4.0.0 to before 4.1.2, Schema.load(data, many=True) is vulnerable to denial of service attacks. A moderately sized request can consume a disproportionate amount of CPU time. This issue has been patched in version 3.26.2 and 4.1.2.

Severity
MEDIUM
CVSS score
5.3 (v3.1)
Vulnerability status
Deferred
Source identifier
Published
2025-12-22 22:16:09.457000
Last modified
2026-10-19 22:10:00.130000
View original CVE JSON
{
  "id": "CVE-2025-68480",
  "sourceIdentifier": "[email protected]",
  "published": "2025-12-22T22:16:09.457",
  "lastModified": "2026-10-19T22:10:00.130",
  "vulnStatus": "Deferred",
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "Marshmallow is a lightweight library for converting complex objects to and from simple Python datatypes. In versions from 3.0.0rc1 to before 3.26.2 and from 4.0.0 to before 4.1.2, Schema.load(data, many=True) is vulnerable to denial of service attacks. A moderately sized request can consume a disproportionate amount of CPU time. This issue has been patched in version 3.26.2 and 4.1.2."
    },
    {
      "lang": "es",
      "value": "Marshmallow es una biblioteca ligera para convertir objetos complejos a y desde tipos de datos simples de Python. En versiones desde 3.0.0rc1 hasta la versión 3.26.2 anterior y desde 4.0.0 hasta la versión 4.1.2 anterior, Schema.load(data, many=True) es vulnerable a ataques de denegación de servicio. Una solicitud de tamaño moderado puede consumir una cantidad desproporcionada de tiempo de CPU. Este problema se ha corregido en la versión 3.26.2 y 4.1.2."
    }
  ],
  "affected": [
    {
      "source": "[email protected]",
      "affectedData": [
        {
          "vendor": "marshmallow-code",
          "product": "marshmallow",
          "versions": [
            {
              "version": ">= 3.0.0rc1, < 3.26.2",
              "status": "affected"
            },
            {
              "version": ">= 4.0.0, < 4.1.2",
              "status": "affected"
            }
          ]
        }
      ]
    }
  ],
  "metrics": {
    "cvssMetricV31": [
      {
        "source": "[email protected]",
        "type": "Secondary",
        "cvssData": {
          "version": "3.1",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L",
          "baseScore": 5.3,
          "baseSeverity": "MEDIUM",
          "attackVector": "NETWORK",
          "attackComplexity": "LOW",
          "privilegesRequired": "NONE",
          "userInteraction": "NONE",
          "scope": "UNCHANGED",
          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
          "availabilityImpact": "LOW"
        },
        "exploitabilityScore": 3.9,
        "impactScore": 1.4
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "timestamp": "2025-12-22T21:34:43.372078Z",
          "id": "CVE-2025-68480",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "yes"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "role": "CISA Coordinator",
          "version": "2.0.3"
        }
      }
    ]
  },
  "weaknesses": [
    {
      "source": "[email protected]",
      "type": "Secondary",
      "description": [
        {
          "lang": "en",
          "value": "CWE-405"
        }
      ]
    }
  ],
  "references": [
    {
      "url": "https://github.com/marshmallow-code/marshmallow/commit/d24a0c9df061c4daa92f71cf85aca25b83eee508",
      "source": "[email protected]"
    },
    {
      "url": "https://github.com/marshmallow-code/marshmallow/security/advisories/GHSA-428g-f7cq-pgp5",
      "source": "[email protected]"
    }
  ]
}