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CVE-2025-35965

Estado: AnalizadaAlta (7.5)—

Mattermost versions 10.4.x <= 10.4.2, 10.5.x <= 10.5.0, 9.11.x <= 9.11.10 fail to validate the uniqueness and quantity of task actions within the UpdateRunTaskActions GraphQL operation, which allows an attacker to create task items containing an excessive number of actions triggered by specific posts, overloading the server and leading to a denial-of-service (DoS) condition.

CVSS

Probabilidad de explotación (EPSS)

EPSS (Exploit Prediction Scoring System, de FIRST) estima la probabilidad de que una vulnerabilidad sea explotada en 30 días. Complementa a CVSS (impacto) y a CISA KEV (explotación confirmada).

🎯 Técnicas ATT&CK

Cómo se explota esta vulnerabilidad y qué consigue el atacante, en el lenguaje de MITRE ATT&CK.

Vector CVSS AV:N/AC:L/PR:N/UI:N indica acceso remoto sin autenticación a aplicación expuesta (T1190). CWE-770 y descripción explícita de DoS por sobrecarga de servidor mediante operación GraphQL maliciosa (T1499).

Inferido por nuestro agente de análisis a partir de la descripción oficial, el vector CVSS y la CWE, y comprobado por un supervisor. Puede contener errores.

🛡️ Mitigaciones ATT&CK que cubren estas técnicas

Tecnologías afectadas (1)

CWE

Referencias

JSON original (NVD)

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{
  "id": "CVE-2025-35965",
  "cveTags": [],
  "metrics": {
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        "ssvcData": {
          "id": "CVE-2025-35965",
          "role": "CISA Coordinator",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "version": "2.0.3",
          "timestamp": "2025-04-24T12:54:06.620657Z"
        }
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    "cvssMetricV31": [
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          "attackVector": "NETWORK",
          "baseSeverity": "MEDIUM",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
          "integrityImpact": "NONE",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "availabilityImpact": "HIGH",
          "privilegesRequired": "LOW",
          "confidentialityImpact": "NONE"
        },
        "impactScore": 3.6,
        "exploitabilityScore": 2.8
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        "source": "nvd@nist.gov",
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          "confidentialityImpact": "NONE"
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  "published": "2025-04-24T07:15:31.280",
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      "tags": [
        "Vendor Advisory"
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      "source": "responsibledisclosure@mattermost.com"
    }
  ],
  "vulnStatus": "Analyzed",
  "weaknesses": [
    {
      "type": "Secondary",
      "source": "responsibledisclosure@mattermost.com",
      "description": [
        {
          "lang": "en",
          "value": "CWE-770"
        }
      ]
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  ],
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    {
      "lang": "en",
      "value": "Mattermost versions 10.4.x <= 10.4.2, 10.5.x <= 10.5.0, 9.11.x <= 9.11.10 fail to validate the uniqueness and quantity of task actions within the UpdateRunTaskActions GraphQL operation, which allows an attacker to create task items containing an excessive number of actions triggered by specific posts, overloading the server and leading to a denial-of-service (DoS) condition."
    },
    {
      "lang": "es",
      "value": "Las versiones de Mattermost 10.4.x &lt;= 10.4.2, 10.5.x &lt;= 10.5.0, 9.11.x &lt;= 9.11.10 no logran validar la singularidad y la cantidad de acciones de tareas dentro de la operación GraphQL UpdateRunTaskActions, lo que permite a un atacante crear elementos de tarea que contienen una cantidad excesiva de acciones activadas por publicaciones específicas, sobrecargando el servidor y provocando una condición de denegación de servicio (DoS)."
    }
  ],
  "lastModified": "2026-06-17T09:14:18.937",
  "configurations": [
    {
      "nodes": [
        {
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          "operator": "OR"
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}