{
  "affected": [
    {
      "ranges": [
        {
          "database_specific": {
            "extracted_events": [
              {
                "introduced": "0"
              },
              {
                "fixed": "39.8.6"
              },
              {
                "introduced": "40.0.0-alpha.1"
              },
              {
                "fixed": "40.9.0"
              },
              {
                "introduced": "41.0.0-alpha.1"
              },
              {
                "fixed": "41.1.1"
              },
              {
                "introduced": "42.0.0-alpha.1"
              },
              {
                "fixed": "42.0.0-beta.1"
              }
            ],
            "source": "AFFECTED_FIELD"
          },
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "0ba01d5cc68b5513b1b42d2f365e87ccd4c77c51"
            },
            {
              "introduced": "a01b4becfa7bf770d2abc6f2fef7076b10005b0d"
            },
            {
              "fixed": "ea4a478a8845bc9a00064918dab6f32477807d41"
            },
            {
              "introduced": "486a9a61d2723755adc4be5e407888d755ee3b9c"
            },
            {
              "fixed": "78896775d929b685fc1af2cba9962f9e4112a494"
            },
            {
              "introduced": "f4a50a8fde877075ce3877efd54578997d5e7ece"
            },
            {
              "fixed": "7e84164ed9b6753bf121c982425509bdd615e8df"
            }
          ],
          "repo": "https://github.com/electron/electron",
          "type": "GIT"
        }
      ]
    }
  ],
  "aliases": [
    "GHSA-5c9j-mhmv-5xgx"
  ],
  "database_specific": {
    "cna_assigner": "GitHub_M",
    "cwe_ids": [
      "CWE-158",
      "CWE-20"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/70xxx/CVE-2026-70603.json"
  },
  "details": "Electron is a framework for writing cross-platform desktop applications using JavaScript, HTML and CSS. Prior to 39.8.6, 40.9.0, 41.1.1, and 42.0.0-beta.1, shell.openPath() did not reject paths containing embedded null bytes. Apps that perform string-only validation of file paths, for example checking the file extension, before passing them to shell.openPath() could be bypassed, allowing an attacker-controlled path to open a different file than the one that passed validation. Apps are only affected if they pass paths derived from untrusted input to shell.openPath() and rely on string-based validation without a filesystem check. This issue is fixed in versions 39.8.6, 40.9.0, 41.1.1, and 42.0.0-beta.1.",
  "id": "CVE-2026-70603",
  "modified": "2026-09-10T03:30:50.953391281Z",
  "published": "2026-08-05T15:56:50.574Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/70xxx/CVE-2026-70603.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/electron/electron/security/advisories/GHSA-5c9j-mhmv-5xgx"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-70603"
    }
  ],
  "schema_version": "1.9.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:H/PR:L/UI:R/S:U/C:H/I:H/A:N",
      "type": "CVSS_V3"
    }
  ],
  "summary": "Electron: shell.openPath path validation bypass via embedded null byte"
}