Vulnerability-Lookup

FKIE_CVE-2026-70604

Vulnerability from fkie_nvd - Published: 2026-08-05 16:17 - Updated: 2026-10-08 13:53

Severity

7.4 (High) - CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:N/A:N

Summary

Electron is a framework for writing cross-platform desktop applications using JavaScript, HTML and CSS. Prior to 39.8.10, 40.9.3, 41.4.0, and 42.0.0, a custom scheme registered with supportFetchAPI: true but without corsEnabled: true was not subject to CORS enforcement. A page loaded from a remote origin could therefore fetch() or XMLHttpRequest that scheme cross-origin and read the full response body, rather than the read being blocked. Apps that serve sensitive data from such a scheme and load remote or untrusted content in a renderer are affected. This issue is fixed in versions 39.8.10, 40.9.3, 41.4.0, and 42.0.0.

References

	URL	Tags
	security-advisories@github.com	https://github.com/electron/electron/security/advisories/GHSA-v3j7-r9gq-3gjw	Vendor Advisory

Impacted products

Vendor	Product	Version
electronjs	electron	*
electronjs	electron	*
electronjs	electron	*
electronjs	electron	42.0.0
electronjs	electron	42.0.0
electronjs	electron	42.0.0
electronjs	electron	42.0.0
electronjs	electron	42.0.0
electronjs	electron	42.0.0
electronjs	electron	42.0.0
electronjs	electron	42.0.0
electronjs	electron	42.0.0
electronjs	electron	42.0.0
electronjs	electron	42.0.0
electronjs	electron	42.0.0
electronjs	electron	42.0.0
electronjs	electron	42.0.0

JSON

To clipboard

{
  "affected": [
    {
      "affectedData": [
        {
          "product": "electron",
          "vendor": "electron",
          "versions": [
            {
              "status": "affected",
              "version": "\u003c 39.8.10"
            },
            {
              "status": "affected",
              "version": "\u003e= 40.0.0-alpha.1, \u003c 40.9.3"
            },
            {
              "status": "affected",
              "version": "\u003e= 41.0.0-alpha.1, \u003c 41.4.0"
            },
            {
              "status": "affected",
              "version": "\u003e= 42.0.0-alpha.1, \u003c 42.0.0"
            }
          ]
        }
      ],
      "source": "security-advisories@github.com"
    }
  ],
  "configurations": [
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:electronjs:electron:*:*:*:*:*:node.js:*:*",
              "matchCriteriaId": "6038A7D4-16F2-4940-AA5B-E5235C86FEEA",
              "versionEndExcluding": "39.8.10",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:electronjs:electron:*:*:*:*:*:node.js:*:*",
              "matchCriteriaId": "6F474638-6FCC-4E25-A641-6E3B57BEFD55",
              "versionEndExcluding": "40.9.3",
              "versionStartIncluding": "40.0.0",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:electronjs:electron:*:*:*:*:*:node.js:*:*",
              "matchCriteriaId": "2CD7048D-1D1D-41BF-AC8C-A17CF85ADFBC",
              "versionEndExcluding": "41.4.0",
              "versionStartIncluding": "41.0.0",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:electronjs:electron:42.0.0:alpha1:*:*:*:node.js:*:*",
              "matchCriteriaId": "498062D8-5C83-4FC2-A04B-94F3228B2BED",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:electronjs:electron:42.0.0:alpha2:*:*:*:node.js:*:*",
              "matchCriteriaId": "A272F9F4-AB62-407C-B1A8-18586A474C19",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:electronjs:electron:42.0.0:alpha3:*:*:*:node.js:*:*",
              "matchCriteriaId": "BF49E260-9653-4D26-8B6C-C6FAFE697F5A",
              "vulnerable": true
            },
            {
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              "matchCriteriaId": "2F3B609A-0CA5-4E8C-865E-CF79B6B0CCCC",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:electronjs:electron:42.0.0:alpha5:*:*:*:node.js:*:*",
              "matchCriteriaId": "308A710A-7965-40A0-87E4-2B66A8CEF87A",
              "vulnerable": true
            },
            {
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              "matchCriteriaId": "6CFEB6F4-A38A-43BC-92B1-2E1DC8BBD1D7",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:electronjs:electron:42.0.0:beta1:*:*:*:node.js:*:*",
              "matchCriteriaId": "7B9FD9F4-48E0-4EA2-957D-57ADA2A3D42A",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:electronjs:electron:42.0.0:beta2:*:*:*:node.js:*:*",
              "matchCriteriaId": "62E12D3F-154E-44AB-919F-0E34E970C2CB",
              "vulnerable": true
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            {
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              "matchCriteriaId": "1860288A-C1FE-47A4-9C05-FD8EDDCE7093",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:electronjs:electron:42.0.0:beta4:*:*:*:node.js:*:*",
              "matchCriteriaId": "83C96449-AF09-442A-BE4C-39A298557337",
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            },
            {
              "criteria": "cpe:2.3:a:electronjs:electron:42.0.0:beta5:*:*:*:node.js:*:*",
              "matchCriteriaId": "5AED130C-260D-47AA-8A07-11A5AC310E36",
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            },
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              "matchCriteriaId": "01C12A55-5CE8-48E7-8F91-52A574D4C39A",
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            },
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              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
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      ]
    }
  ],
  "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, 40.9.3, 41.4.0, and 42.0.0, a custom scheme registered with supportFetchAPI: true but without corsEnabled: true was not subject to CORS enforcement. A page loaded from a remote origin could therefore fetch() or XMLHttpRequest that scheme cross-origin and read the full response body, rather than the read being blocked. Apps that serve sensitive data from such a scheme and load remote or untrusted content in a renderer are affected. This issue is fixed in versions 39.8.10, 40.9.3, 41.4.0, and 42.0.0."
    }
  ],
  "id": "CVE-2026-70604",
  "lastModified": "2026-10-08T13:53:51.593",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "NONE",
          "baseScore": 7.4,
          "baseSeverity": "HIGH",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "NONE",
          "privilegesRequired": "NONE",
          "scope": "CHANGED",
          "userInteraction": "REQUIRED",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:N/A:N",
          "version": "3.1"
        },
        "exploitabilityScore": 2.8,
        "impactScore": 4.0,
        "source": "security-advisories@github.com",
        "type": "Secondary"
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2026-70604",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "role": "CISA Coordinator",
          "timestamp": "2026-08-05T18:13:52.321211Z",
          "version": "2.0.3"
        }
      }
    ]
  },
  "published": "2026-08-05T16:17:04.617",
  "references": [
    {
      "source": "security-advisories@github.com",
      "tags": [
        "Vendor Advisory"
      ],
      "url": "https://github.com/electron/electron/security/advisories/GHSA-v3j7-r9gq-3gjw"
    }
  ],
  "sourceIdentifier": "security-advisories@github.com",
  "vulnStatus": "Analyzed",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-942"
        }
      ],
      "source": "security-advisories@github.com",
      "type": "Secondary"
    }
  ]
}

CVE-2026-70604 (GCVE-0-2026-70604)

Vulnerability from cvelistv5 – Published: 2026-08-05 15:59 – Updated: 2026-08-05 18:41

Title

Electron: Custom protocol with supportFetchAPI but not corsEnabled allows cross-origin reads

Summary

Severity

7.4 (High)


                        
                          CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:N/A:N

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-08-05 18:13 UTC

CWE

CWE-942 - Permissive Cross-domain Policy with Untrusted Domains

Assigner

GitHub_M CNA under the mitre root

CNA scorecard C 72/100 over 7565 records in the last 180 days details

References

1 reference

URL	Tags
https://github.com/electron/electron/security/adv…	x_refsource_CONFIRM

Impacted products

1 product

Vendor	Product	Version
electron	electron	Affected: < 39.8.10 Affected: >= 40.0.0-alpha.1, < 40.9.3 Affected: >= 41.0.0-alpha.1, < 41.4.0 Affected: >= 42.0.0-alpha.1, < 42.0.0

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2026-70604",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-08-05T18:13:52.321211Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-08-05T18:41:32.481Z",
          "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 40.9.3"
            },
            {
              "status": "affected",
              "version": "\u003e= 41.0.0-alpha.1, \u003c 41.4.0"
            },
            {
              "status": "affected",
              "version": "\u003e= 42.0.0-alpha.1, \u003c 42.0.0"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "Electron is a framework for writing cross-platform desktop applications using JavaScript, HTML and CSS. Prior to 39.8.10, 40.9.3, 41.4.0, and 42.0.0, a custom scheme registered with supportFetchAPI: true but without corsEnabled: true was not subject to CORS enforcement. A page loaded from a remote origin could therefore fetch() or XMLHttpRequest that scheme cross-origin and read the full response body, rather than the read being blocked. Apps that serve sensitive data from such a scheme and load remote or untrusted content in a renderer are affected. This issue is fixed in versions 39.8.10, 40.9.3, 41.4.0, and 42.0.0."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "NONE",
            "baseScore": 7.4,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "NONE",
            "privilegesRequired": "NONE",
            "scope": "CHANGED",
            "userInteraction": "REQUIRED",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:N/A:N",
            "version": "3.1"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-942",
              "description": "CWE-942: Permissive Cross-domain Policy with Untrusted Domains",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-08-05T15:59:24.043Z",
        "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "shortName": "GitHub_M"
      },
      "references": [
        {
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          "tags": [
            "x_refsource_CONFIRM"
          ],
          "url": "https://github.com/electron/electron/security/advisories/GHSA-v3j7-r9gq-3gjw"
        }
      ],
      "source": {
        "advisory": "GHSA-v3j7-r9gq-3gjw",
        "discovery": "UNKNOWN"
      },
      "title": "Electron: Custom protocol with supportFetchAPI but not corsEnabled allows cross-origin reads"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
    "assignerShortName": "GitHub_M",
    "cveId": "CVE-2026-70604",
    "datePublished": "2026-08-05T15:59:24.043Z",
    "dateReserved": "2026-08-04T19:50:27.328Z",
    "dateUpdated": "2026-08-05T18:41:32.481Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

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.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.

Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.

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FKIE_CVE-2026-70604

CVE-2026-70604 (GCVE-0-2026-70604)

Tags

Sightings

Nomenclature

Related by attack behaviour