CVE-2026-41511

{
  "id": "CVE-2026-41511",
  "sourceIdentifier": "[email protected]",
  "published": "2026-05-08T19:16:31.363",
  "lastModified": "2026-10-26T18:10:00.173",
  "vulnStatus": "Analyzed",
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "OpenMcdf is a fully .NET / C# library to manipulate Compound File Binary File Format files, also known as Structured Storage. Prior to version 3.1.3, OpenMcdf does not detect cycles in the directory entry red-black tree of a Compound File Binary (CFB) document. A crafted CFB file with a cycle in the LeftSiblingID / RightSiblingID chain causes Storage.EnumerateEntries() and Storage.OpenStream() to loop indefinitely, consuming the calling thread with no possibility of recovery via try/catch. This issue has been patched in version 3.1.3."
    },
    {
      "lang": "es",
      "value": "OpenMcdf es una biblioteca completamente .NET / C# para manipular archivos de formato binario compuesto, también conocido como Almacenamiento Estructurado. Antes de la versión 3.1.3, OpenMcdf no detecta ciclos en el árbol rojo-negro de entradas de directorio de un documento de archivo binario compuesto (CFB). Un archivo CFB manipulado con un ciclo en la cadena LeftSiblingID / RightSiblingID provoca que Storage.EnumerateEntries() y Storage.OpenStream() entren en un bucle indefinidamente, consumiendo el hilo de llamada sin posibilidad de recuperación mediante try/catch. Este problema ha sido parcheado en la versión 3.1.3."
    }
  ],
  "affected": [
    {
      "source": "[email protected]",
      "affectedData": [
        {
          "vendor": "ironfede",
          "product": "openmcdf",
          "versions": [
            {
              "version": "< 3.1.3",
              "status": "affected"
            }
          ]
        }
      ]
    }
  ],
  "metrics": {
    "cvssMetricV31": [
      {
        "source": "[email protected]",
        "type": "Secondary",
        "cvssData": {
          "version": "3.1",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
          "baseScore": 6.2,
          "baseSeverity": "MEDIUM",
          "attackVector": "LOCAL",
          "attackComplexity": "LOW",
          "privilegesRequired": "NONE",
          "userInteraction": "NONE",
          "scope": "UNCHANGED",
          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
          "availabilityImpact": "HIGH"
        },
        "exploitabilityScore": 2.5,
        "impactScore": 3.6
      },
      {
        "source": "[email protected]",
        "type": "Primary",
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          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
          "baseScore": 5.5,
          "baseSeverity": "MEDIUM",
          "attackVector": "LOCAL",
          "attackComplexity": "LOW",
          "privilegesRequired": "LOW",
          "userInteraction": "NONE",
          "scope": "UNCHANGED",
          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
          "availabilityImpact": "HIGH"
        },
        "exploitabilityScore": 1.8,
        "impactScore": 3.6
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "timestamp": "2026-05-11T18:45:00.791400Z",
          "id": "CVE-2026-41511",
          "options": [
            {
              "exploitation": "poc"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "role": "CISA Coordinator",
          "version": "2.0.3"
        }
      }
    ]
  },
  "weaknesses": [
    {
      "source": "[email protected]",
      "type": "Secondary",
      "description": [
        {
          "lang": "en",
          "value": "CWE-835"
        }
      ]
    }
  ],
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  "references": [
    {
      "url": "https://github.com/openmcdf/openmcdf/commit/24f445a557fc4f46461cf6d02d296cce16c293a0",
      "source": "[email protected]",
      "tags": [
        "Patch"
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    },
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      "url": "https://github.com/openmcdf/openmcdf/releases/tag/v3.1.3",
      "source": "[email protected]",
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        "Release Notes"
      ]
    },
    {
      "url": "https://github.com/openmcdf/openmcdf/security/advisories/GHSA-jxpf-xq2m-q525",
      "source": "[email protected]",
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}