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CVE-2026-102831

Estado: Pendiente de análisisAlta (8.1)—

JupyterLab is an extensible environment for interactive and reproducible computing, based on the Jupyter Notebook Architecture. From JupyterLab 4.5.0 until 4.5.11 and 4.6.4, from Notebook 7.5.0 until 7.6.3, and from JupyterLite Core 0.7.0 until 0.8.4, the system clipboard cell-paste path accepts attacker-controlled cell JSON without clearing metadata.trusted.

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When useSystemClipboardForCells is active and pasteCodeCellsWithoutOutput is disabled, a pasted code cell can mark HTML output as trusted, bypass output sanitization, and execute script in the authenticated JupyterLab origin without executing the cell. Markdown and raw cells are not affected because their output is sanitized. This issue is fixed in JupyterLab 4.5.11 and 4.6.4, Notebook 7.6.3, and JupyterLite Core 0.8.4.

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.

XSS via clipboard paste que ejecuta script en origen autenticado sin sanitizar metadata.trusted en celdas JSON. Requiere interacción (pegar desde portapapeles) en navegador web.

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

Restrict Web-Based ContentUser TrainingRestrict File and Directory PermissionsRemote Data StorageExecution PreventionBehavior Prevention on Endpoint

Tecnologías afectadas (3)

⚠ Inferidas por IA a partir de la descripción — NVD aún no ha analizado esta CVE; no son CPE verificados.

Jupyter — JupyterlabAIJupyter — Jupyterlite CoreAIJupyter — NotebookAI

CWE

Referencias

JSON original (NVD)

Mostrar
{
  "id": "CVE-2026-102831",
  "cveTags": [],
  "metrics": {
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2026-102831",
          "role": "CISA Coordinator",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "total"
            }
          ],
          "version": "2.0.3",
          "timestamp": "2026-10-02T12:22:47.366494Z"
        }
      }
    ],
    "cvssMetricV31": [
      {
        "type": "Secondary",
        "source": "security-advisories@github.com",
        "cvssData": {
          "scope": "UNCHANGED",
          "version": "3.1",
          "baseScore": 8.1,
          "attackVector": "NETWORK",
          "baseSeverity": "HIGH",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N",
          "integrityImpact": "HIGH",
          "userInteraction": "REQUIRED",
          "attackComplexity": "LOW",
          "availabilityImpact": "NONE",
          "privilegesRequired": "NONE",
          "confidentialityImpact": "HIGH"
        },
        "impactScore": 5.2,
        "exploitabilityScore": 2.8
      }
    ]
  },
  "affected": [
    {
      "source": "security-advisories@github.com",
      "affectedData": [
        {
          "vendor": "jupyterlab",
          "product": "jupyterlab",
          "versions": [
            {
              "status": "affected",
              "version": ">= 4.5.0, < 4.5.11"
            },
            {
              "status": "affected",
              "version": ">= 4.6.0, < 4.6.4"
            }
          ]
        },
        {
          "vendor": "jupyterlab",
          "product": "notebook",
          "versions": [
            {
              "status": "affected",
              "version": ">= 7.5.0, < 7.6.3"
            }
          ]
        },
        {
          "vendor": "jupyterlab",
          "product": "jupyterlite-core",
          "versions": [
            {
              "status": "affected",
              "version": ">= 0.7.0, < 0.8.4"
            }
          ]
        }
      ]
    }
  ],
  "published": "2026-09-29T19:17:25.700",
  "references": [
    {
      "url": "https://github.com/jupyterlab/jupyterlab/commit/1a10a7da5ff655849b21581c2633b46483ae0be9",
      "source": "security-advisories@github.com"
    },
    {
      "url": "https://github.com/jupyterlab/jupyterlab/commit/7f9f29e29e0c83fb17b0f11da57d06b3c6a40d96",
      "source": "security-advisories@github.com"
    },
    {
      "url": "https://github.com/jupyterlab/jupyterlab/commit/cf6e89a8d315c4134cefa50c220bca296da466a7",
      "source": "security-advisories@github.com"
    },
    {
      "url": "https://github.com/jupyterlab/jupyterlab/releases/tag/v4.5.11",
      "source": "security-advisories@github.com"
    },
    {
      "url": "https://github.com/jupyterlab/jupyterlab/releases/tag/v4.6.4",
      "source": "security-advisories@github.com"
    },
    {
      "url": "https://github.com/jupyterlab/jupyterlab/security/advisories/GHSA-6966-vjj6-99xv",
      "source": "security-advisories@github.com"
    }
  ],
  "vulnStatus": "Awaiting Analysis",
  "weaknesses": [
    {
      "type": "Secondary",
      "source": "security-advisories@github.com",
      "description": [
        {
          "lang": "en",
          "value": "CWE-79"
        },
        {
          "lang": "en",
          "value": "CWE-345"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "JupyterLab is an extensible environment for interactive and reproducible computing, based on the Jupyter Notebook Architecture. From JupyterLab 4.5.0 until 4.5.11 and 4.6.4, from Notebook 7.5.0 until 7.6.3, and from JupyterLite Core 0.7.0 until 0.8.4, the system clipboard cell-paste path accepts attacker-controlled cell JSON without clearing metadata.trusted. When useSystemClipboardForCells is active and pasteCodeCellsWithoutOutput is disabled, a pasted code cell can mark HTML output as trusted, bypass output sanitization, and execute script in the authenticated JupyterLab origin without executing the cell. Markdown and raw cells are not affected because their output is sanitized. This issue is fixed in JupyterLab 4.5.11 and 4.6.4, Notebook 7.6.3, and JupyterLite Core 0.8.4."
    }
  ],
  "lastModified": "2026-10-02T13:17:27.660",
  "sourceIdentifier": "security-advisories@github.com"
}