CVE-2026-60009

{
  "id": "CVE-2026-60009",
  "sourceIdentifier": "[email protected]",
  "published": "2026-08-05T11:16:25.363",
  "lastModified": "2026-10-24T16:10:00.153",
  "vulnStatus": "Analyzed",
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In Eclipse Theia versions up to and including 1.73.1, the `@theia/filesystem` backend binds `POST /file-upload` in every filesystem-enabled deployment. The handler takes an attacker-supplied absolute path from the multipart `uri` field and calls `fs.move(tmp, target, { overwrite: true })` with no workspace confinement and no authentication. In browser (non-Electron) deployments the connection token is enforced only on WebSocket upgrades; the HTTP middleware in `@theia/core` re-issues the cookie and calls `next()` without rejecting tokenless HTTP requests. Because `multipart/form-data` is a CORS-safelisted request type, a cross-origin web page can trigger the write with no preflight and no credentials, resulting in an unauthenticated arbitrary file write outside the workspace to any absolute path the backend process can write. This can escalate to remote code execution, for example by overwriting a startup-executed file such as `~/.bashrc`. Electron mode uses a separate `ElectronSecurityToken` and is not affected via this path."
    },
    {
      "lang": "es",
      "value": "En las versiones de Eclipse Theia hasta la 1.73.1 inclusive, el backend “@theia/filesystem” enlaza “POST /file-upload” en cada despliegue con sistema de archivos habilitado. El gestor toma una ruta absoluta suministrada por el atacante del campo “uri” multipart y llama a “fs.move(tmp, target, { overwrite: true })” sin confinamiento de espacio de trabajo y sin autenticación. En los despliegues de navegador (que no son Electron), el token de conexión se aplica solo en las actualizaciones de WebSocket; el middleware HTTP en “@theia/core” reemite la cookie y llama a “next()” sin rechazar las solicitudes HTTP sin token. Debido a que “multipart/form-data” es un tipo de solicitud en la lista segura de CORS, una página web de origen cruzado puede activar la escritura sin preflight y sin credenciales, lo que resulta en una escritura de archivo arbitrario no autenticada fuera del espacio de trabajo a cualquier ruta absoluta que el proceso de backend pueda escribir. Esto puede escalar a ejecución remota de código, por ejemplo, sobrescribiendo un archivo ejecutado al inicio como “~/.bashrc”. El modo Electron utiliza un “ElectronSecurityToken” separado y no se ve afectado por esta vía."
    }
  ],
  "affected": [
    {
      "source": "[email protected]",
      "affectedData": [
        {
          "vendor": "Eclipse Foundation",
          "product": "Eclipse Theia",
          "defaultStatus": "unaffected",
          "versions": [
            {
              "version": "0",
              "lessThan": "1.74.0",
              "versionType": "semver",
              "status": "affected"
            }
          ]
        }
      ]
    }
  ],
  "metrics": {
    "cvssMetricV31": [
      {
        "source": "[email protected]",
        "type": "Secondary",
        "cvssData": {
          "version": "3.1",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H",
          "baseScore": 8.8,
          "baseSeverity": "HIGH",
          "attackVector": "NETWORK",
          "attackComplexity": "LOW",
          "privilegesRequired": "NONE",
          "userInteraction": "REQUIRED",
          "scope": "UNCHANGED",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "availabilityImpact": "HIGH"
        },
        "exploitabilityScore": 2.8,
        "impactScore": 5.9
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "timestamp": "2026-08-05T12:36:40.861334Z",
          "id": "CVE-2026-60009",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "total"
            }
          ],
          "role": "CISA Coordinator",
          "version": "2.0.3"
        }
      }
    ]
  },
  "weaknesses": [
    {
      "source": "[email protected]",
      "type": "Secondary",
      "description": [
        {
          "lang": "en",
          "value": "CWE-22"
        },
        {
          "lang": "en",
          "value": "CWE-73"
        },
        {
          "lang": "en",
          "value": "CWE-306"
        },
        {
          "lang": "en",
          "value": "CWE-352"
        }
      ]
    }
  ],
  "configurations": [
    {
      "nodes": [
        {
          "operator": "OR",
          "negate": false,
          "cpeMatch": [
            {
              "vulnerable": true,
              "criteria": "cpe:2.3:a:eclipse:theia:*:*:*:*:*:*:*:*",
              "versionEndExcluding": "1.74.0",
              "matchCriteriaId": "670EAAD9-2B91-4846-B5B2-09E075AACF1F"
            }
          ]
        }
      ]
    }
  ],
  "references": [
    {
      "url": "https://github.com/eclipse-theia/theia/security/advisories/GHSA-62f6-wcvg-54h3",
      "source": "[email protected]",
      "tags": [
        "Broken Link"
      ]
    },
    {
      "url": "https://gitlab.eclipse.org/security/cve-assignment/-/work_items/177",
      "source": "[email protected]",
      "tags": [
        "Vendor Advisory"
      ]
    },
    {
      "url": "https://gitlab.eclipse.org/security/vulnerability-reports/-/issues/595",
      "source": "[email protected]",
      "tags": [
        "Exploit",
        "Mitigation",
        "Vendor Advisory"
      ]
    },
    {
      "url": "https://gitlab.eclipse.org/security/vulnerability-reports/-/work_items/595",
      "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
      "tags": [
        "Exploit",
        "Mitigation",
        "Vendor Advisory"
      ]
    }
  ]
}