CVE-2026-71436

{
  "id": "CVE-2026-71436",
  "sourceIdentifier": "[email protected]",
  "published": "2026-08-06T22:18:30.563",
  "lastModified": "2026-10-24T15:10:00.190",
  "vulnStatus": "Awaiting Analysis",
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "Mermaid is a JavaScript tool that uses Markdown-inspired text to create and modify diagrams and charts. From version 10.6.0 until 10.9.8 and 11.16.1, Mermaid XY Charts are vulnerable to an infinite loop denial of service in the setXAxisRangeData function when configuring an X-Axis with invalid parameters. Because each loop iteration appends an element to an array, this generally causes a RangeError to appear after a few seconds, but it may instead cause the page or JavaScript process to crash from memory exhaustion, depending on the environment. This issue is fixed in versions 10.9.8 and 11.16.1."
    },
    {
      "lang": "es",
      "value": "Mermaid es una herramienta de JavaScript que utiliza texto inspirado en Markdown para crear y modificar diagramas y gráficos. Desde la versión 10.6.0 hasta la 10.9.8 y la 11.16.1, los gráficos XY de Mermaid son vulnerables a una denegación de servicio por bucle infinito en la función setXAxisRangeData al configurar un eje X con parámetros no válidos. Debido a que cada iteración del bucle añade un elemento a un array, esto generalmente provoca que aparezca un RangeError después de unos segundos, pero en su lugar puede causar que la página o el proceso de JavaScript se bloquee por agotamiento de memoria, dependiendo del entorno. Este problema está solucionado en las versiones 10.9.8 y 11.16.1."
    }
  ],
  "affected": [
    {
      "source": "[email protected]",
      "affectedData": [
        {
          "vendor": "mermaid-js",
          "product": "mermaid",
          "versions": [
            {
              "version": ">= 10.6.0, < 10.9.8",
              "status": "affected"
            },
            {
              "version": ">= 11.0.0-alpha.1, < 11.16.1",
              "status": "affected"
            }
          ]
        }
      ]
    }
  ],
  "metrics": {
    "cvssMetricV40": [
      {
        "source": "[email protected]",
        "type": "Secondary",
        "cvssData": {
          "version": "4.0",
          "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:L/SC:N/SI:N/SA:L/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X",
          "baseScore": 5.3,
          "baseSeverity": "MEDIUM",
          "attackVector": "NETWORK",
          "attackComplexity": "LOW",
          "attackRequirements": "NONE",
          "privilegesRequired": "NONE",
          "userInteraction": "PASSIVE",
          "vulnConfidentialityImpact": "NONE",
          "vulnIntegrityImpact": "NONE",
          "vulnAvailabilityImpact": "LOW",
          "subConfidentialityImpact": "NONE",
          "subIntegrityImpact": "NONE",
          "subAvailabilityImpact": "LOW",
          "exploitMaturity": "NOT_DEFINED",
          "confidentialityRequirement": "NOT_DEFINED",
          "integrityRequirement": "NOT_DEFINED",
          "availabilityRequirement": "NOT_DEFINED",
          "modifiedAttackVector": "NOT_DEFINED",
          "modifiedAttackComplexity": "NOT_DEFINED",
          "modifiedAttackRequirements": "NOT_DEFINED",
          "modifiedPrivilegesRequired": "NOT_DEFINED",
          "modifiedUserInteraction": "NOT_DEFINED",
          "modifiedVulnConfidentialityImpact": "NOT_DEFINED",
          "modifiedVulnIntegrityImpact": "NOT_DEFINED",
          "modifiedVulnAvailabilityImpact": "NOT_DEFINED",
          "modifiedSubConfidentialityImpact": "NOT_DEFINED",
          "modifiedSubIntegrityImpact": "NOT_DEFINED",
          "modifiedSubAvailabilityImpact": "NOT_DEFINED",
          "Safety": "NOT_DEFINED",
          "Automatable": "NOT_DEFINED",
          "Recovery": "NOT_DEFINED",
          "valueDensity": "NOT_DEFINED",
          "vulnerabilityResponseEffort": "NOT_DEFINED",
          "providerUrgency": "NOT_DEFINED"
        }
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "timestamp": "2026-08-07T16:15:22.877895Z",
          "id": "CVE-2026-71436",
          "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-835"
        },
        {
          "lang": "en",
          "value": "CWE-1325"
        }
      ]
    }
  ],
  "references": [
    {
      "url": "https://github.com/mermaid-js/mermaid/commit/630aa7e5dd417e1f56bff2a1ce8df2c5ad08d289",
      "source": "[email protected]"
    },
    {
      "url": "https://github.com/mermaid-js/mermaid/commit/ef60adc837d9d5107af21285f01e83dea309bd0a",
      "source": "[email protected]"
    },
    {
      "url": "https://github.com/mermaid-js/mermaid/pull/8022",
      "source": "[email protected]"
    },
    {
      "url": "https://github.com/mermaid-js/mermaid/releases/tag/[email protected]",
      "source": "[email protected]"
    },
    {
      "url": "https://github.com/mermaid-js/mermaid/releases/tag/v10.9.8",
      "source": "[email protected]"
    },
    {
      "url": "https://github.com/mermaid-js/mermaid/security/advisories/GHSA-2v8p-3f2j-5mp7",
      "source": "[email protected]"
    }
  ]
}