CVE-2026-70608 (GCVE-0-2026-70608)

Vulnerability from cvelistv5 – Published: 2026-08-05 17:27 – Updated: 2026-08-05 18:46
VLAI
Title
Electron: Sandboxed iframe can bypass the allow-popups restriction via the OpenURL navigation path
Summary
Electron is a framework for writing cross-platform desktop applications using JavaScript, HTML and CSS. Prior to 39.8.10, 41.10.3, and 42.0.1, a sandboxed iframe without the allow-popups keyword could still open a new window or trigger setWindowOpenHandler with no user interaction because new-window navigations taking the OpenURL path did not apply the iframe sandbox popup restriction. Apps that embed untrusted content in sandboxed iframes and rely on the absence of allow-popups to prevent window creation are affected, while apps that deny window creation in setWindowOpenHandler or do not embed untrusted content in sandboxed iframes are not affected. This issue is fixed in 39.8.10, 41.10.3, and 42.0.1.
Severity
7.2 (High)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N
SSVC
Exploitation: none Automatable: yes Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
  • CWE-693 - Protection Mechanism Failure
  • CWE-1021 - Improper Restriction of Rendered UI Layers or Frames
Assigner
References
Impacted products
Vendor Product Version
electron electron Affected: < 39.8.10
Affected: >= 40.0.0-alpha.1, < 41.10.3
Affected: >= 42.0.0-alpha.1, < 42.0.1
Create a notification for this product.
Show details on NVD website
To clipboard 

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2026-70608",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "yes"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-08-05T18:14:00.193334Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-08-05T18:46:49.877Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "electron",
          "vendor": "electron",
          "versions": [
            {
              "status": "affected",
              "version": "\u003c 39.8.10"
            },
            {
              "status": "affected",
              "version": "\u003e= 40.0.0-alpha.1, \u003c 41.10.3"
            },
            {
              "status": "affected",
              "version": "\u003e= 42.0.0-alpha.1, \u003c 42.0.1"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "Electron is a framework for writing cross-platform desktop applications using JavaScript, HTML and CSS. Prior to 39.8.10, 41.10.3, and 42.0.1, a sandboxed iframe without the allow-popups keyword could still open a new window or trigger setWindowOpenHandler with no user interaction because new-window navigations taking the OpenURL path did not apply the iframe sandbox popup restriction. Apps that embed untrusted content in sandboxed iframes and rely on the absence of allow-popups to prevent window creation are affected, while apps that deny window creation in setWindowOpenHandler or do not embed untrusted content in sandboxed iframes are not affected. This issue is fixed in 39.8.10, 41.10.3, and 42.0.1."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "NONE",
            "baseScore": 7.2,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "LOW",
            "integrityImpact": "LOW",
            "privilegesRequired": "NONE",
            "scope": "CHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N",
            "version": "3.1"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-693",
              "description": "CWE-693: Protection Mechanism Failure",
              "lang": "en",
              "type": "CWE"
            }
          ]
        },
        {
          "descriptions": [
            {
              "cweId": "CWE-1021",
              "description": "CWE-1021: Improper Restriction of Rendered UI Layers or Frames",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-08-05T17:27:15.743Z",
        "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "shortName": "GitHub_M"
      },
      "references": [
        {
          "name": "https://github.com/electron/electron/security/advisories/GHSA-9f4c-93c8-jc8g",
          "tags": [
            "x_refsource_CONFIRM"
          ],
          "url": "https://github.com/electron/electron/security/advisories/GHSA-9f4c-93c8-jc8g"
        },
        {
          "name": "https://github.com/electron/electron/pull/51437",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/electron/electron/pull/51437"
        },
        {
          "name": "https://github.com/electron/electron/pull/51438",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/electron/electron/pull/51438"
        },
        {
          "name": "https://github.com/electron/electron/pull/51439",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/electron/electron/pull/51439"
        },
        {
          "name": "https://github.com/electron/electron/commit/3ff23c52ab364a0afc6ab5bd7851291d3159de57",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/electron/electron/commit/3ff23c52ab364a0afc6ab5bd7851291d3159de57"
        },
        {
          "name": "https://github.com/electron/electron/commit/57cbe329c4ae8aab5ac5ebdcb588adc9a11de0d3",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/electron/electron/commit/57cbe329c4ae8aab5ac5ebdcb588adc9a11de0d3"
        },
        {
          "name": "https://github.com/electron/electron/commit/68cf8b7d9122260f6b534a69a82c701a56cf159f",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/electron/electron/commit/68cf8b7d9122260f6b534a69a82c701a56cf159f"
        },
        {
          "name": "https://github.com/electron/electron/releases/tag/v39.8.10",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/electron/electron/releases/tag/v39.8.10"
        },
        {
          "name": "https://github.com/electron/electron/releases/tag/v41.10.3",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/electron/electron/releases/tag/v41.10.3"
        },
        {
          "name": "https://github.com/electron/electron/releases/tag/v42.0.1",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/electron/electron/releases/tag/v42.0.1"
        }
      ],
      "source": {
        "advisory": "GHSA-9f4c-93c8-jc8g",
        "discovery": "UNKNOWN"
      },
      "title": "Electron: Sandboxed iframe can bypass the allow-popups restriction via the OpenURL navigation path"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
    "assignerShortName": "GitHub_M",
    "cveId": "CVE-2026-70608",
    "datePublished": "2026-08-05T17:27:15.743Z",
    "dateReserved": "2026-08-04T19:50:27.329Z",
    "dateUpdated": "2026-08-05T18:46:49.877Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "epss": {
      "cve": "CVE-2026-70608",
      "date": "2026-08-09",
      "epss": "0.00259",
      "percentile": "0.17404"
    },
    "nvd": "{\"cve\":{\"id\":\"CVE-2026-70608\",\"sourceIdentifier\":\"security-advisories@github.com\",\"published\":\"2026-08-05T18:17:15.160\",\"lastModified\":\"2026-08-05T19:17:40.410\",\"vulnStatus\":\"Received\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"Electron is a framework for writing cross-platform desktop applications using JavaScript, HTML and CSS. Prior to 39.8.10, 41.10.3, and 42.0.1, a sandboxed iframe without the allow-popups keyword could still open a new window or trigger setWindowOpenHandler with no user interaction because new-window navigations taking the OpenURL path did not apply the iframe sandbox popup restriction. Apps that embed untrusted content in sandboxed iframes and rely on the absence of allow-popups to prevent window creation are affected, while apps that deny window creation in setWindowOpenHandler or do not embed untrusted content in sandboxed iframes are not affected. This issue is fixed in 39.8.10, 41.10.3, and 42.0.1.\"}],\"affected\":[{\"source\":\"security-advisories@github.com\",\"affectedData\":[{\"vendor\":\"electron\",\"product\":\"electron\",\"versions\":[{\"version\":\"\u003c 39.8.10\",\"status\":\"affected\"},{\"version\":\"\u003e= 40.0.0-alpha.1, \u003c 41.10.3\",\"status\":\"affected\"},{\"version\":\"\u003e= 42.0.0-alpha.1, \u003c 42.0.1\",\"status\":\"affected\"}]}]}],\"metrics\":{\"cvssMetricV31\":[{\"source\":\"security-advisories@github.com\",\"type\":\"Secondary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N\",\"baseScore\":7.2,\"baseSeverity\":\"HIGH\",\"attackVector\":\"NETWORK\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"NONE\",\"userInteraction\":\"NONE\",\"scope\":\"CHANGED\",\"confidentialityImpact\":\"LOW\",\"integrityImpact\":\"LOW\",\"availabilityImpact\":\"NONE\"},\"exploitabilityScore\":3.9,\"impactScore\":2.7}],\"ssvcV203\":[{\"source\":\"134c704f-9b21-4f2e-91b3-4a467353bcc0\",\"ssvcData\":{\"timestamp\":\"2026-08-05T18:14:00.193334Z\",\"id\":\"CVE-2026-70608\",\"options\":[{\"exploitation\":\"none\"},{\"automatable\":\"yes\"},{\"technicalImpact\":\"partial\"}],\"role\":\"CISA Coordinator\",\"version\":\"2.0.3\"}}]},\"weaknesses\":[{\"source\":\"security-advisories@github.com\",\"type\":\"Secondary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-693\"},{\"lang\":\"en\",\"value\":\"CWE-1021\"}]}],\"references\":[{\"url\":\"https://github.com/electron/electron/commit/3ff23c52ab364a0afc6ab5bd7851291d3159de57\",\"source\":\"security-advisories@github.com\"},{\"url\":\"https://github.com/electron/electron/commit/57cbe329c4ae8aab5ac5ebdcb588adc9a11de0d3\",\"source\":\"security-advisories@github.com\"},{\"url\":\"https://github.com/electron/electron/commit/68cf8b7d9122260f6b534a69a82c701a56cf159f\",\"source\":\"security-advisories@github.com\"},{\"url\":\"https://github.com/electron/electron/pull/51437\",\"source\":\"security-advisories@github.com\"},{\"url\":\"https://github.com/electron/electron/pull/51438\",\"source\":\"security-advisories@github.com\"},{\"url\":\"https://github.com/electron/electron/pull/51439\",\"source\":\"security-advisories@github.com\"},{\"url\":\"https://github.com/electron/electron/releases/tag/v39.8.10\",\"source\":\"security-advisories@github.com\"},{\"url\":\"https://github.com/electron/electron/releases/tag/v41.10.3\",\"source\":\"security-advisories@github.com\"},{\"url\":\"https://github.com/electron/electron/releases/tag/v42.0.1\",\"source\":\"security-advisories@github.com\"},{\"url\":\"https://github.com/electron/electron/security/advisories/GHSA-9f4c-93c8-jc8g\",\"source\":\"security-advisories@github.com\"}]}}",
    "vulnrichment": {
      "containers": "{\"adp\": [{\"title\": \"CISA ADP Vulnrichment\", \"metrics\": [{\"other\": {\"type\": \"ssvc\", \"content\": {\"id\": \"CVE-2026-70608\", \"role\": \"CISA Coordinator\", \"options\": [{\"Exploitation\": \"none\"}, {\"Automatable\": \"yes\"}, {\"Technical Impact\": \"partial\"}], \"version\": \"2.0.3\", \"timestamp\": \"2026-08-05T18:14:00.193334Z\"}}}], \"providerMetadata\": {\"orgId\": \"134c704f-9b21-4f2e-91b3-4a467353bcc0\", \"shortName\": \"CISA-ADP\", \"dateUpdated\": \"2026-08-05T18:14:04.893Z\"}}], \"cna\": {\"title\": \"Electron: Sandboxed iframe can bypass the allow-popups restriction via the OpenURL navigation path\", \"source\": {\"advisory\": \"GHSA-9f4c-93c8-jc8g\", \"discovery\": \"UNKNOWN\"}, \"metrics\": [{\"cvssV3_1\": {\"scope\": \"CHANGED\", \"version\": \"3.1\", \"baseScore\": 7.2, \"attackVector\": \"NETWORK\", \"baseSeverity\": \"HIGH\", \"vectorString\": \"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N\", \"integrityImpact\": \"LOW\", \"userInteraction\": \"NONE\", \"attackComplexity\": \"LOW\", \"availabilityImpact\": \"NONE\", \"privilegesRequired\": \"NONE\", \"confidentialityImpact\": \"LOW\"}}], \"affected\": [{\"vendor\": \"electron\", \"product\": \"electron\", \"versions\": [{\"status\": \"affected\", \"version\": \"\u003c 39.8.10\"}, {\"status\": \"affected\", \"version\": \"\u003e= 40.0.0-alpha.1, \u003c 41.10.3\"}, {\"status\": \"affected\", \"version\": \"\u003e= 42.0.0-alpha.1, \u003c 42.0.1\"}]}], \"references\": [{\"url\": \"https://github.com/electron/electron/security/advisories/GHSA-9f4c-93c8-jc8g\", \"name\": \"https://github.com/electron/electron/security/advisories/GHSA-9f4c-93c8-jc8g\", \"tags\": [\"x_refsource_CONFIRM\"]}, {\"url\": \"https://github.com/electron/electron/pull/51437\", \"name\": \"https://github.com/electron/electron/pull/51437\", \"tags\": [\"x_refsource_MISC\"]}, {\"url\": \"https://github.com/electron/electron/pull/51438\", \"name\": \"https://github.com/electron/electron/pull/51438\", \"tags\": [\"x_refsource_MISC\"]}, {\"url\": \"https://github.com/electron/electron/pull/51439\", \"name\": \"https://github.com/electron/electron/pull/51439\", \"tags\": [\"x_refsource_MISC\"]}, {\"url\": \"https://github.com/electron/electron/commit/3ff23c52ab364a0afc6ab5bd7851291d3159de57\", \"name\": \"https://github.com/electron/electron/commit/3ff23c52ab364a0afc6ab5bd7851291d3159de57\", \"tags\": [\"x_refsource_MISC\"]}, {\"url\": \"https://github.com/electron/electron/commit/57cbe329c4ae8aab5ac5ebdcb588adc9a11de0d3\", \"name\": \"https://github.com/electron/electron/commit/57cbe329c4ae8aab5ac5ebdcb588adc9a11de0d3\", \"tags\": [\"x_refsource_MISC\"]}, {\"url\": \"https://github.com/electron/electron/commit/68cf8b7d9122260f6b534a69a82c701a56cf159f\", \"name\": \"https://github.com/electron/electron/commit/68cf8b7d9122260f6b534a69a82c701a56cf159f\", \"tags\": [\"x_refsource_MISC\"]}, {\"url\": \"https://github.com/electron/electron/releases/tag/v39.8.10\", \"name\": \"https://github.com/electron/electron/releases/tag/v39.8.10\", \"tags\": [\"x_refsource_MISC\"]}, {\"url\": \"https://github.com/electron/electron/releases/tag/v41.10.3\", \"name\": \"https://github.com/electron/electron/releases/tag/v41.10.3\", \"tags\": [\"x_refsource_MISC\"]}, {\"url\": \"https://github.com/electron/electron/releases/tag/v42.0.1\", \"name\": \"https://github.com/electron/electron/releases/tag/v42.0.1\", \"tags\": [\"x_refsource_MISC\"]}], \"descriptions\": [{\"lang\": \"en\", \"value\": \"Electron is a framework for writing cross-platform desktop applications using JavaScript, HTML and CSS. Prior to 39.8.10, 41.10.3, and 42.0.1, a sandboxed iframe without the allow-popups keyword could still open a new window or trigger setWindowOpenHandler with no user interaction because new-window navigations taking the OpenURL path did not apply the iframe sandbox popup restriction. Apps that embed untrusted content in sandboxed iframes and rely on the absence of allow-popups to prevent window creation are affected, while apps that deny window creation in setWindowOpenHandler or do not embed untrusted content in sandboxed iframes are not affected. This issue is fixed in 39.8.10, 41.10.3, and 42.0.1.\"}], \"problemTypes\": [{\"descriptions\": [{\"lang\": \"en\", \"type\": \"CWE\", \"cweId\": \"CWE-693\", \"description\": \"CWE-693: Protection Mechanism Failure\"}]}, {\"descriptions\": [{\"lang\": \"en\", \"type\": \"CWE\", \"cweId\": \"CWE-1021\", \"description\": \"CWE-1021: Improper Restriction of Rendered UI Layers or Frames\"}]}], \"providerMetadata\": {\"orgId\": \"a0819718-46f1-4df5-94e2-005712e83aaa\", \"shortName\": \"GitHub_M\", \"dateUpdated\": \"2026-08-05T17:27:15.743Z\"}}}",
      "cveMetadata": "{\"cveId\": \"CVE-2026-70608\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2026-08-05T18:46:49.877Z\", \"dateReserved\": \"2026-08-04T19:50:27.329Z\", \"assignerOrgId\": \"a0819718-46f1-4df5-94e2-005712e83aaa\", \"datePublished\": \"2026-08-05T17:27:15.743Z\", \"assignerShortName\": \"GitHub_M\"}",
      "dataType": "CVE_RECORD",
      "dataVersion": "5.2"
    }
  }
}



Log in or create an account to share your comment.




Tags
Taxonomy of the tags.





Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

Author Source Type Date Other

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


Detection rules are retrieved from Rulezet.