CVE-2026-53765

{
  "id": "CVE-2026-53765",
  "sourceIdentifier": "[email protected]",
  "published": "2026-06-24T22:16:47.783",
  "lastModified": "2026-10-25T23:10:00.167",
  "vulnStatus": "Analyzed",
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "Chrome DevTools for agents (chrome-devtools-mcp) lets your coding agent control and inspect a live Chrome browser. From 0.20.0 until 1.1.0, The chrome-devtools-mcp daemon writes its PID file with fs.writeFileSync() to a deterministic runtime path. On typical macOS environments, and on Linux sessions where $XDG_RUNTIME_DIR is unset, that runtime path falls back to /tmp/chrome-devtools-mcp-<uid>/daemon.pid. Because the write does not use O_NOFOLLOW, a local low-privilege user on the same POSIX host can pre-create /tmp/chrome-devtools-mcp-<victim_uid>/daemon.pid as a symlink to a file writable by the victim. When the victim later starts daemon mode, fs.writeFileSync() follows the symlink and truncates the target file to the daemon PID string. This vulnerability is fixed in  1.1.0."
    },
    {
      "lang": "es",
      "value": "Chrome DevTools para agentes (chrome-devtools-mcp) permite a su agente de codificación controlar e inspeccionar un navegador Chrome en vivo. Desde 0.20.0 hasta 1.1.0, el demonio chrome-devtools-mcp escribe su archivo PID con fs.writeFileSync() en una ruta de tiempo de ejecución determinista. En entornos macOS típicos, y en sesiones de Linux donde $XDG_RUNTIME_DIR no está configurado, esa ruta de tiempo de ejecución recurre a /tmp/chrome-devtools-mcp-[uid]/daemon.pid. Debido a que la escritura no utiliza O_NOFOLLOW, un usuario local de bajos privilegios en el mismo host POSIX puede pre-crear /tmp/chrome-devtools-mcp-[victim_uid]/daemon.pid como un enlace simbólico a un archivo escribible por la víctima. Cuando la víctima inicia más tarde el modo demonio, fs.writeFileSync() sigue el enlace simbólico y trunca el archivo objetivo a la cadena PID del demonio. Esta vulnerabilidad está corregida en 1.1.0."
    }
  ],
  "affected": [
    {
      "source": "[email protected]",
      "affectedData": [
        {
          "vendor": "ChromeDevTools",
          "product": "chrome-devtools-mcp",
          "versions": [
            {
              "version": ">= 0.20.0, <  1.1.0",
              "status": "affected"
            }
          ]
        }
      ]
    }
  ],
  "metrics": {
    "cvssMetricV31": [
      {
        "source": "[email protected]",
        "type": "Secondary",
        "cvssData": {
          "version": "3.1",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:L",
          "baseScore": 6.1,
          "baseSeverity": "MEDIUM",
          "attackVector": "LOCAL",
          "attackComplexity": "LOW",
          "privilegesRequired": "LOW",
          "userInteraction": "NONE",
          "scope": "UNCHANGED",
          "confidentialityImpact": "NONE",
          "integrityImpact": "HIGH",
          "availabilityImpact": "LOW"
        },
        "exploitabilityScore": 1.8,
        "impactScore": 4.2
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "timestamp": "2026-06-26T17:51:05.310554Z",
          "id": "CVE-2026-53765",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "role": "CISA Coordinator",
          "version": "2.0.3"
        }
      }
    ]
  },
  "weaknesses": [
    {
      "source": "[email protected]",
      "type": "Secondary",
      "description": [
        {
          "lang": "en",
          "value": "CWE-59"
        }
      ]
    }
  ],
  "configurations": [
    {
      "nodes": [
        {
          "operator": "OR",
          "negate": false,
          "cpeMatch": [
            {
              "vulnerable": true,
              "criteria": "cpe:2.3:a:google:chrome-devtools-mcp:*:*:*:*:*:node.js:*:*",
              "versionStartIncluding": "0.20.0",
              "versionEndExcluding": "1.1.0",
              "matchCriteriaId": "ECCAC380-0C97-4614-B8EF-18B0BEA5CFA5"
            }
          ]
        }
      ]
    }
  ],
  "references": [
    {
      "url": "https://github.com/ChromeDevTools/chrome-devtools-mcp/security/advisories/GHSA-3pvj-jv98-qhjq",
      "source": "[email protected]",
      "tags": [
        "Exploit",
        "Third Party Advisory"
      ]
    }
  ]
}