CVE-2026-102673 (GCVE-0-2026-102673)

Vulnerability from cvelistv5 – Published: 2026-09-29 16:38 – Updated: 2026-09-29 16:38
VLAI
Title
Electron drops inherited HTML sandbox restrictions for popups opened through OpenURLFromTab
Summary
Electron is a framework for writing cross-platform desktop applications using JavaScript, HTML and CSS. Prior to 41.10.4, 42.5.2, and 43.0.0, popups opened from a sandboxed iframe through Electron's OpenURLFromTab navigation path, including links using target="_blank" or a middle-click, did not receive the inherited HTML sandbox restrictions. An untrusted iframe using the allow-scripts allow-popups configuration could therefore open a popup with the embedding application's full origin, exposing that origin's cookies, storage, and same-origin scripting capabilities. Applications that do not embed untrusted content in sandboxed iframes are not affected. This issue is fixed in versions 41.10.4, 42.5.2, and 43.0.0.
Severity
8.2 (High)
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:L/A:N
CWE
  • CWE-346 - Origin Validation Error
  • CWE-693 - Protection Mechanism Failure
Assigner
References
Impacted products
Vendor Product Version CPE status
electron electron Affected: < 41.10.4
Affected: >= 42.0.0-alpha.1, < 42.5.2
Affected: >= 43.0.0-alpha.1, < 43.0.0
guessed Create a notification for this product.
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{
  "containers": {
    "cna": {
      "affected": [
        {
          "product": "electron",
          "vendor": "electron",
          "versions": [
            {
              "status": "affected",
              "version": "\u003c 41.10.4"
            },
            {
              "status": "affected",
              "version": "\u003e= 42.0.0-alpha.1, \u003c 42.5.2"
            },
            {
              "status": "affected",
              "version": "\u003e= 43.0.0-alpha.1, \u003c 43.0.0"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "Electron is a framework for writing cross-platform desktop applications using JavaScript, HTML and CSS. Prior to 41.10.4, 42.5.2, and 43.0.0, popups opened from a sandboxed iframe through Electron\u0027s OpenURLFromTab navigation path, including links using target=\"_blank\" or a middle-click, did not receive the inherited HTML sandbox restrictions. An untrusted iframe using the allow-scripts allow-popups configuration could therefore open a popup with the embedding application\u0027s full origin, exposing that origin\u0027s cookies, storage, and same-origin scripting capabilities. Applications that do not embed untrusted content in sandboxed iframes are not affected. This issue is fixed in versions 41.10.4, 42.5.2, and 43.0.0."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "NONE",
            "baseScore": 8.2,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "LOW",
            "privilegesRequired": "NONE",
            "scope": "CHANGED",
            "userInteraction": "REQUIRED",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:L/A:N",
            "version": "3.1"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-346",
              "description": "CWE-346: Origin Validation Error",
              "lang": "en",
              "type": "CWE"
            }
          ]
        },
        {
          "descriptions": [
            {
              "cweId": "CWE-693",
              "description": "CWE-693: Protection Mechanism Failure",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-09-29T16:38:41.946Z",
        "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "shortName": "GitHub_M"
      },
      "references": [
        {
          "name": "https://github.com/electron/electron/security/advisories/GHSA-hq2x-r82h-9wj4",
          "tags": [
            "x_refsource_CONFIRM"
          ],
          "url": "https://github.com/electron/electron/security/advisories/GHSA-hq2x-r82h-9wj4"
        },
        {
          "name": "https://github.com/electron/electron/pull/52133",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/electron/electron/pull/52133"
        },
        {
          "name": "https://github.com/electron/electron/commit/7ea14d5f55ecb11a30447701ddca16b3feee0bba",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/electron/electron/commit/7ea14d5f55ecb11a30447701ddca16b3feee0bba"
        },
        {
          "name": "https://github.com/electron/electron/commit/e26b2640e7795c42bfb111b76009cbb4327c9a69",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/electron/electron/commit/e26b2640e7795c42bfb111b76009cbb4327c9a69"
        },
        {
          "name": "https://github.com/electron/electron/commit/ebe1165ee2b05c203c26dd2244ef1c5b9b1c04da",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/electron/electron/commit/ebe1165ee2b05c203c26dd2244ef1c5b9b1c04da"
        },
        {
          "name": "https://github.com/electron/electron/releases/tag/v41.10.4",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/electron/electron/releases/tag/v41.10.4"
        },
        {
          "name": "https://github.com/electron/electron/releases/tag/v42.5.2",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/electron/electron/releases/tag/v42.5.2"
        },
        {
          "name": "https://github.com/electron/electron/releases/tag/v43.0.0",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/electron/electron/releases/tag/v43.0.0"
        }
      ],
      "source": {
        "advisory": "GHSA-hq2x-r82h-9wj4",
        "discovery": "UNKNOWN"
      },
      "title": "Electron drops inherited HTML sandbox restrictions for popups opened through OpenURLFromTab"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
    "assignerShortName": "GitHub_M",
    "cveId": "CVE-2026-102673",
    "datePublished": "2026-09-29T16:38:41.946Z",
    "dateReserved": "2026-09-29T16:10:04.075Z",
    "dateUpdated": "2026-09-29T16:38:41.946Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "nvd": {
      "cve": {
        "affected": [
          {
            "affectedData": [
              {
                "product": "electron",
                "vendor": "electron",
                "versions": [
                  {
                    "status": "affected",
                    "version": "\u003c 41.10.4"
                  },
                  {
                    "status": "affected",
                    "version": "\u003e= 42.0.0-alpha.1, \u003c 42.5.2"
                  },
                  {
                    "status": "affected",
                    "version": "\u003e= 43.0.0-alpha.1, \u003c 43.0.0"
                  }
                ]
              }
            ],
            "source": "security-advisories@github.com"
          }
        ],
        "cveTags": [],
        "descriptions": [
          {
            "lang": "en",
            "value": "Electron is a framework for writing cross-platform desktop applications using JavaScript, HTML and CSS. Prior to 41.10.4, 42.5.2, and 43.0.0, popups opened from a sandboxed iframe through Electron\u0027s OpenURLFromTab navigation path, including links using target=\"_blank\" or a middle-click, did not receive the inherited HTML sandbox restrictions. An untrusted iframe using the allow-scripts allow-popups configuration could therefore open a popup with the embedding application\u0027s full origin, exposing that origin\u0027s cookies, storage, and same-origin scripting capabilities. Applications that do not embed untrusted content in sandboxed iframes are not affected. This issue is fixed in versions 41.10.4, 42.5.2, and 43.0.0."
          }
        ],
        "id": "CVE-2026-102673",
        "lastModified": "2026-09-29T17:17:07.487",
        "metrics": {
          "cvssMetricV31": [
            {
              "cvssData": {
                "attackComplexity": "LOW",
                "attackVector": "NETWORK",
                "availabilityImpact": "NONE",
                "baseScore": 8.2,
                "baseSeverity": "HIGH",
                "confidentialityImpact": "HIGH",
                "integrityImpact": "LOW",
                "privilegesRequired": "NONE",
                "scope": "CHANGED",
                "userInteraction": "REQUIRED",
                "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:L/A:N",
                "version": "3.1"
              },
              "exploitabilityScore": 2.8,
              "impactScore": 4.7,
              "source": "security-advisories@github.com",
              "type": "Secondary"
            }
          ]
        },
        "published": "2026-09-29T17:17:07.487",
        "references": [
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            "source": "security-advisories@github.com",
            "url": "https://github.com/electron/electron/commit/7ea14d5f55ecb11a30447701ddca16b3feee0bba"
          },
          {
            "source": "security-advisories@github.com",
            "url": "https://github.com/electron/electron/commit/e26b2640e7795c42bfb111b76009cbb4327c9a69"
          },
          {
            "source": "security-advisories@github.com",
            "url": "https://github.com/electron/electron/commit/ebe1165ee2b05c203c26dd2244ef1c5b9b1c04da"
          },
          {
            "source": "security-advisories@github.com",
            "url": "https://github.com/electron/electron/pull/52133"
          },
          {
            "source": "security-advisories@github.com",
            "url": "https://github.com/electron/electron/releases/tag/v41.10.4"
          },
          {
            "source": "security-advisories@github.com",
            "url": "https://github.com/electron/electron/releases/tag/v42.5.2"
          },
          {
            "source": "security-advisories@github.com",
            "url": "https://github.com/electron/electron/releases/tag/v43.0.0"
          },
          {
            "source": "security-advisories@github.com",
            "url": "https://github.com/electron/electron/security/advisories/GHSA-hq2x-r82h-9wj4"
          }
        ],
        "sourceIdentifier": "security-advisories@github.com",
        "vulnStatus": "Received",
        "weaknesses": [
          {
            "description": [
              {
                "lang": "en",
                "value": "CWE-346"
              },
              {
                "lang": "en",
                "value": "CWE-693"
              }
            ],
            "source": "security-advisories@github.com",
            "type": "Primary"
          }
        ]
      }
    }
  }
}



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