Vulnerability-Lookup

CVE-2026-34771 (GCVE-0-2026-34771)

Vulnerability from cvelistv5 – Published: 2026-04-03 23:47 – Updated: 2026-06-30 12:09

Title

Electron: Use-after-free in WebContents fullscreen, pointer-lock, and keyboard-lock permission callbacks

Summary

Electron is a framework for writing cross-platform desktop applications using JavaScript, HTML and CSS. Prior to versions 38.8.6, 39.8.0, 40.7.0, and 41.0.0-beta.8, apps that register an asynchronous session.setPermissionRequestHandler() may be vulnerable to a use-after-free when handling fullscreen, pointer-lock, or keyboard-lock permission requests. If the requesting frame navigates or the window closes while the permission handler is pending, invoking the stored callback dereferences freed memory, which may lead to a crash or memory corruption. Apps that do not set a permission request handler, or whose handler responds synchronously, are not affected. This issue has been patched in versions 38.8.6, 39.8.0, 40.7.0, and 41.0.0-beta.8.

Severity

7.5 (High)


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

SSVC

Exploitation: none Automatable: no Technical Impact: total

CISA Coordinator (v2.0.3)

CWE

CWE-416 - Use After Free
CWE-364 - Signal Handler Race Condition

Assigner

GitHub_M

References

4 references

URL	Tags
https://github.com/electron/electron/security/adv…	x_refsource_CONFIRM
https://access.redhat.com/security/cve/CVE-2026-34771	vdb-entryx_refsource_REDHAT
https://bugzilla.redhat.com/show_bug.cgi?id=2454995	issue-trackingx_refsource_REDHAT
https://security.access.redhat.com/data/csaf/v2/v…	x_sadp-csaf-vex

Impacted products

3 products

Vendor	Product	Version
electron	electron	Affected: < 38.8.6 Affected: >= 39.0.0-alpha.1, < 39.8.0 Affected: >= 40.0.0-alpha.1, < 40.7.0 Affected: >= 41.0.0-alpha.1, < 41.0.0-beta.8
Red Hat	Red Hat Build of Podman Desktop	cpe:/a:redhat:podman_desktop:1
Red Hat	Red Hat Build of Podman Desktop - Tech Preview	cpe:/a:redhat:podman_desktop:0

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2026-34771",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "total"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-04-07T00:00:00+00:00",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-04-08T03:55:37.519Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      },
      {
        "affected": [
          {
            "cpes": [
              "cpe:/a:redhat:podman_desktop:1"
            ],
            "defaultStatus": "affected",
            "product": "Red Hat Build of Podman Desktop",
            "vendor": "Red Hat"
          },
          {
            "cpes": [
              "cpe:/a:redhat:podman_desktop:0"
            ],
            "defaultStatus": "affected",
            "product": "Red Hat Build of Podman Desktop - Tech Preview",
            "vendor": "Red Hat"
          }
        ],
        "datePublic": "2026-04-03T23:47:23.171Z",
        "descriptions": [
          {
            "lang": "en",
            "value": "A flaw was found in Electron, a framework for building desktop applications. This vulnerability, known as a use-after-free, occurs when an application registers an asynchronous permission request handler and a frame navigates or a window closes while the handler is pending. A remote attacker could exploit this by causing the application to attempt to access freed memory. This could lead to a crash of the application or memory corruption, potentially allowing for further unauthorized actions."
          }
        ],
        "metrics": [
          {
            "other": {
              "content": {
                "namespace": "https://access.redhat.com/security/updates/classification/",
                "value": "Important"
              },
              "type": "Red Hat severity rating"
            }
          },
          {
            "cvssV3_1": {
              "attackComplexity": "HIGH",
              "attackVector": "NETWORK",
              "availabilityImpact": "HIGH",
              "baseScore": 7.5,
              "baseSeverity": "HIGH",
              "confidentialityImpact": "HIGH",
              "integrityImpact": "HIGH",
              "privilegesRequired": "NONE",
              "scope": "UNCHANGED",
              "userInteraction": "REQUIRED",
              "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H",
              "version": "3.1"
            },
            "format": "CVSS"
          }
        ],
        "problemTypes": [
          {
            "descriptions": [
              {
                "cweId": "CWE-364",
                "description": "Signal Handler Race Condition",
                "lang": "en",
                "type": "CWE"
              }
            ]
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-06-30T12:09:09.173Z",
          "orgId": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c",
          "shortName": "redhat-SADP"
        },
        "references": [
          {
            "tags": [
              "vdb-entry",
              "x_refsource_REDHAT"
            ],
            "url": "https://access.redhat.com/security/cve/CVE-2026-34771"
          },
          {
            "name": "RHBZ#2454995",
            "tags": [
              "issue-tracking",
              "x_refsource_REDHAT"
            ],
            "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2454995"
          },
          {
            "tags": [
              "x_sadp-csaf-vex"
            ],
            "url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-34771.json"
          }
        ],
        "timeline": [
          {
            "lang": "en",
            "time": "2026-04-04T00:00:54.679Z",
            "value": "Reported to Red Hat."
          },
          {
            "lang": "en",
            "time": "2026-04-03T23:47:23.171Z",
            "value": "Made public."
          }
        ],
        "title": "electron: Electron: Memory corruption or application crash via use-after-free in permission request handling",
        "workarounds": [
          {
            "lang": "en",
            "value": "Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base or stability."
          }
        ],
        "x_adpType": "supplier",
        "x_generator": {
          "engine": "sadp-cli 1.0.0"
        }
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "electron",
          "vendor": "electron",
          "versions": [
            {
              "status": "affected",
              "version": "\u003c 38.8.6"
            },
            {
              "status": "affected",
              "version": "\u003e= 39.0.0-alpha.1, \u003c 39.8.0"
            },
            {
              "status": "affected",
              "version": "\u003e= 40.0.0-alpha.1, \u003c 40.7.0"
            },
            {
              "status": "affected",
              "version": "\u003e= 41.0.0-alpha.1, \u003c 41.0.0-beta.8"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "Electron is a framework for writing cross-platform desktop applications using JavaScript, HTML and CSS. Prior to versions 38.8.6, 39.8.0, 40.7.0, and 41.0.0-beta.8, apps that register an asynchronous session.setPermissionRequestHandler() may be vulnerable to a use-after-free when handling fullscreen, pointer-lock, or keyboard-lock permission requests. If the requesting frame navigates or the window closes while the permission handler is pending, invoking the stored callback dereferences freed memory, which may lead to a crash or memory corruption. Apps that do not set a permission request handler, or whose handler responds synchronously, are not affected. This issue has been patched in versions 38.8.6, 39.8.0, 40.7.0, and 41.0.0-beta.8."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "attackComplexity": "HIGH",
            "attackVector": "NETWORK",
            "availabilityImpact": "HIGH",
            "baseScore": 7.5,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "HIGH",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "REQUIRED",
            "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H",
            "version": "3.1"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-416",
              "description": "CWE-416: Use After Free",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-04-03T23:47:23.171Z",
        "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "shortName": "GitHub_M"
      },
      "references": [
        {
          "name": "https://github.com/electron/electron/security/advisories/GHSA-8337-3p73-46f4",
          "tags": [
            "x_refsource_CONFIRM"
          ],
          "url": "https://github.com/electron/electron/security/advisories/GHSA-8337-3p73-46f4"
        }
      ],
      "source": {
        "advisory": "GHSA-8337-3p73-46f4",
        "discovery": "UNKNOWN"
      },
      "title": "Electron: Use-after-free in WebContents fullscreen, pointer-lock, and keyboard-lock permission callbacks"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
    "assignerShortName": "GitHub_M",
    "cveId": "CVE-2026-34771",
    "datePublished": "2026-04-03T23:47:23.171Z",
    "dateReserved": "2026-03-30T19:54:55.555Z",
    "dateUpdated": "2026-06-30T12:09:09.173Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "epss": {
      "cve": "CVE-2026-34771",
      "date": "2026-07-02",
      "epss": "0.00287",
      "percentile": "0.20505"
    },
    "nvd": "{\"cve\":{\"id\":\"CVE-2026-34771\",\"sourceIdentifier\":\"security-advisories@github.com\",\"published\":\"2026-04-04T00:16:17.980\",\"lastModified\":\"2026-06-30T03:18:58.303\",\"vulnStatus\":\"Modified\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"Electron is a framework for writing cross-platform desktop applications using JavaScript, HTML and CSS. Prior to versions 38.8.6, 39.8.0, 40.7.0, and 41.0.0-beta.8, apps that register an asynchronous session.setPermissionRequestHandler() may be vulnerable to a use-after-free when handling fullscreen, pointer-lock, or keyboard-lock permission requests. If the requesting frame navigates or the window closes while the permission handler is pending, invoking the stored callback dereferences freed memory, which may lead to a crash or memory corruption. Apps that do not set a permission request handler, or whose handler responds synchronously, are not affected. This issue has been patched in versions 38.8.6, 39.8.0, 40.7.0, and 41.0.0-beta.8.\"}],\"affected\":[{\"source\":\"security-advisories@github.com\",\"affectedData\":[{\"vendor\":\"electron\",\"product\":\"electron\",\"versions\":[{\"version\":\"\u003c 38.8.6\",\"status\":\"affected\"},{\"version\":\"\u003e= 39.0.0-alpha.1, \u003c 39.8.0\",\"status\":\"affected\"},{\"version\":\"\u003e= 40.0.0-alpha.1, \u003c 40.7.0\",\"status\":\"affected\"},{\"version\":\"\u003e= 41.0.0-alpha.1, \u003c 41.0.0-beta.8\",\"status\":\"affected\"}]}]},{\"source\":\"0b0ca135-0b70-47e7-9f44-1890c2a1c46c\",\"affectedData\":[{\"vendor\":\"Red Hat\",\"product\":\"Red Hat Build of Podman Desktop\",\"defaultStatus\":\"affected\",\"cpes\":[\"cpe:/a:redhat:podman_desktop:1\"]},{\"vendor\":\"Red Hat\",\"product\":\"Red Hat Build of Podman Desktop - Tech Preview\",\"defaultStatus\":\"affected\",\"cpes\":[\"cpe:/a:redhat:podman_desktop:0\"]}]}],\"metrics\":{\"cvssMetricV31\":[{\"source\":\"security-advisories@github.com\",\"type\":\"Secondary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H\",\"baseScore\":7.5,\"baseSeverity\":\"HIGH\",\"attackVector\":\"NETWORK\",\"attackComplexity\":\"HIGH\",\"privilegesRequired\":\"NONE\",\"userInteraction\":\"REQUIRED\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"HIGH\",\"integrityImpact\":\"HIGH\",\"availabilityImpact\":\"HIGH\"},\"exploitabilityScore\":1.6,\"impactScore\":5.9},{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H\",\"baseScore\":8.8,\"baseSeverity\":\"HIGH\",\"attackVector\":\"NETWORK\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"NONE\",\"userInteraction\":\"REQUIRED\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"HIGH\",\"integrityImpact\":\"HIGH\",\"availabilityImpact\":\"HIGH\"},\"exploitabilityScore\":2.8,\"impactScore\":5.9},{\"source\":\"0b0ca135-0b70-47e7-9f44-1890c2a1c46c\",\"type\":\"Secondary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H\",\"baseScore\":7.5,\"baseSeverity\":\"HIGH\",\"attackVector\":\"NETWORK\",\"attackComplexity\":\"HIGH\",\"privilegesRequired\":\"NONE\",\"userInteraction\":\"REQUIRED\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"HIGH\",\"integrityImpact\":\"HIGH\",\"availabilityImpact\":\"HIGH\"},\"exploitabilityScore\":1.6,\"impactScore\":5.9}],\"ssvcV203\":[{\"source\":\"134c704f-9b21-4f2e-91b3-4a467353bcc0\",\"ssvcData\":{\"timestamp\":\"2026-04-07T00:00:00+00:00\",\"id\":\"CVE-2026-34771\",\"options\":[{\"exploitation\":\"none\"},{\"automatable\":\"no\"},{\"technicalImpact\":\"total\"}],\"role\":\"CISA Coordinator\",\"version\":\"2.0.3\"}}]},\"weaknesses\":[{\"source\":\"security-advisories@github.com\",\"type\":\"Primary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-416\"}]},{\"source\":\"0b0ca135-0b70-47e7-9f44-1890c2a1c46c\",\"type\":\"Secondary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-364\"}]}],\"configurations\":[{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:electronjs:electron:*:*:*:*:*:node.js:*:*\",\"versionEndExcluding\":\"38.8.6\",\"matchCriteriaId\":\"9CE003A2-03CC-4355-AA17-2CBD204EC6C3\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:electronjs:electron:*:*:*:*:*:node.js:*:*\",\"versionStartIncluding\":\"39.0.0\",\"versionEndExcluding\":\"39.8.0\",\"matchCriteriaId\":\"642CA6B2-000A-480D-B062-80593D150787\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:electronjs:electron:*:*:*:*:*:node.js:*:*\",\"versionStartIncluding\":\"40.0.0\",\"versionEndExcluding\":\"40.7.0\",\"matchCriteriaId\":\"E54036E0-1D1F-4265-A2F3-B9C1F88F65ED\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:electronjs:electron:41.0.0:alpha1:*:*:*:node.js:*:*\",\"matchCriteriaId\":\"A20225D6-F435-4D09-962D-B162F521B6AD\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:electronjs:electron:41.0.0:alpha2:*:*:*:node.js:*:*\",\"matchCriteriaId\":\"33712802-EB60-4E9A-83B8-9F2320B70CB4\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:electronjs:electron:41.0.0:alpha3:*:*:*:node.js:*:*\",\"matchCriteriaId\":\"9D0A9142-54FE-47BB-9FEB-5E97528E28FE\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:electronjs:electron:41.0.0:alpha4:*:*:*:node.js:*:*\",\"matchCriteriaId\":\"9E1D191F-DEAE-4DB3-9822-F31AF9FE3BAC\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:electronjs:electron:41.0.0:alpha5:*:*:*:node.js:*:*\",\"matchCriteriaId\":\"45A8192F-3D2C-4987-9BBE-7ECC3F71965D\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:electronjs:electron:41.0.0:alpha6:*:*:*:node.js:*:*\",\"matchCriteriaId\":\"EEA1A2E5-03DB-46CB-8427-7F31A8A7CE1C\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:electronjs:electron:41.0.0:beta1:*:*:*:node.js:*:*\",\"matchCriteriaId\":\"B2DFCE75-BD3F-4537-B5B8-14097E262EA2\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:electronjs:electron:41.0.0:beta2:*:*:*:node.js:*:*\",\"matchCriteriaId\":\"BC346E25-EA43-4615-8CDB-16D15D46E4FF\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:electronjs:electron:41.0.0:beta3:*:*:*:node.js:*:*\",\"matchCriteriaId\":\"FA5B3C00-CAFC-4995-BF35-9920F3039E77\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:electronjs:electron:41.0.0:beta4:*:*:*:node.js:*:*\",\"matchCriteriaId\":\"3672F3FB-6B5E-40FD-8A92-CB4DD6BC6A93\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:electronjs:electron:41.0.0:beta5:*:*:*:node.js:*:*\",\"matchCriteriaId\":\"9EE4F8AE-21D2-4815-85B7-B7ECCC0D5059\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:electronjs:electron:41.0.0:beta6:*:*:*:node.js:*:*\",\"matchCriteriaId\":\"D195760C-7DD9-4259-9042-EDE65AEAC1D6\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:electronjs:electron:41.0.0:beta7:*:*:*:node.js:*:*\",\"matchCriteriaId\":\"B370859F-24D3-4B25-B580-1A5B6DB94BFE\"}]}]}],\"references\":[{\"url\":\"https://github.com/electron/electron/security/advisories/GHSA-8337-3p73-46f4\",\"source\":\"security-advisories@github.com\",\"tags\":[\"Vendor Advisory\"]},{\"url\":\"https://access.redhat.com/security/cve/CVE-2026-34771\",\"source\":\"0b0ca135-0b70-47e7-9f44-1890c2a1c46c\"},{\"url\":\"https://bugzilla.redhat.com/show_bug.cgi?id=2454995\",\"source\":\"0b0ca135-0b70-47e7-9f44-1890c2a1c46c\"},{\"url\":\"https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-34771.json\",\"source\":\"0b0ca135-0b70-47e7-9f44-1890c2a1c46c\"}]}}",
    "vulnrichment": {
      "containers": "{\"adp\": [{\"title\": \"CISA ADP Vulnrichment\", \"metrics\": [{\"other\": {\"type\": \"ssvc\", \"content\": {\"id\": \"CVE-2026-34771\", \"role\": \"CISA Coordinator\", \"options\": [{\"Exploitation\": \"none\"}, {\"Automatable\": \"no\"}, {\"Technical Impact\": \"total\"}], \"version\": \"2.0.3\", \"timestamp\": \"2026-04-06T16:04:11.207548Z\"}}}], \"providerMetadata\": {\"orgId\": \"134c704f-9b21-4f2e-91b3-4a467353bcc0\", \"shortName\": \"CISA-ADP\", \"dateUpdated\": \"2026-04-06T16:04:15.675Z\"}}], \"cna\": {\"title\": \"Electron: Use-after-free in WebContents fullscreen, pointer-lock, and keyboard-lock permission callbacks\", \"source\": {\"advisory\": \"GHSA-8337-3p73-46f4\", \"discovery\": \"UNKNOWN\"}, \"metrics\": [{\"cvssV3_1\": {\"scope\": \"UNCHANGED\", \"version\": \"3.1\", \"baseScore\": 7.5, \"attackVector\": \"NETWORK\", \"baseSeverity\": \"HIGH\", \"vectorString\": \"CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H\", \"integrityImpact\": \"HIGH\", \"userInteraction\": \"REQUIRED\", \"attackComplexity\": \"HIGH\", \"availabilityImpact\": \"HIGH\", \"privilegesRequired\": \"NONE\", \"confidentialityImpact\": \"HIGH\"}}], \"affected\": [{\"vendor\": \"electron\", \"product\": \"electron\", \"versions\": [{\"status\": \"affected\", \"version\": \"\u003c 38.8.6\"}, {\"status\": \"affected\", \"version\": \"\u003e= 39.0.0-alpha.1, \u003c 39.8.0\"}, {\"status\": \"affected\", \"version\": \"\u003e= 40.0.0-alpha.1, \u003c 40.7.0\"}, {\"status\": \"affected\", \"version\": \"\u003e= 41.0.0-alpha.1, \u003c 41.0.0-beta.8\"}]}], \"references\": [{\"url\": \"https://github.com/electron/electron/security/advisories/GHSA-8337-3p73-46f4\", \"name\": \"https://github.com/electron/electron/security/advisories/GHSA-8337-3p73-46f4\", \"tags\": [\"x_refsource_CONFIRM\"]}], \"descriptions\": [{\"lang\": \"en\", \"value\": \"Electron is a framework for writing cross-platform desktop applications using JavaScript, HTML and CSS. Prior to versions 38.8.6, 39.8.0, 40.7.0, and 41.0.0-beta.8, apps that register an asynchronous session.setPermissionRequestHandler() may be vulnerable to a use-after-free when handling fullscreen, pointer-lock, or keyboard-lock permission requests. If the requesting frame navigates or the window closes while the permission handler is pending, invoking the stored callback dereferences freed memory, which may lead to a crash or memory corruption. Apps that do not set a permission request handler, or whose handler responds synchronously, are not affected. This issue has been patched in versions 38.8.6, 39.8.0, 40.7.0, and 41.0.0-beta.8.\"}], \"problemTypes\": [{\"descriptions\": [{\"lang\": \"en\", \"type\": \"CWE\", \"cweId\": \"CWE-416\", \"description\": \"CWE-416: Use After Free\"}]}], \"providerMetadata\": {\"orgId\": \"a0819718-46f1-4df5-94e2-005712e83aaa\", \"shortName\": \"GitHub_M\", \"dateUpdated\": \"2026-04-03T23:47:23.171Z\"}}}",
      "cveMetadata": "{\"cveId\": \"CVE-2026-34771\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2026-04-08T03:55:37.519Z\", \"dateReserved\": \"2026-03-30T19:54:55.555Z\", \"assignerOrgId\": \"a0819718-46f1-4df5-94e2-005712e83aaa\", \"datePublished\": \"2026-04-03T23:47:23.171Z\", \"assignerShortName\": \"GitHub_M\"}",
      "dataType": "CVE_RECORD",
      "dataVersion": "5.2"
    }
  }
}

FKIE_CVE-2026-34771

Vulnerability from fkie_nvd - Published: 2026-04-04 00:16 - Updated: 2026-06-30 03:18

Severity

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

Summary

References

URL	Tags
security-advisories@github.com	https://github.com/electron/electron/security/advisories/GHSA-8337-3p73-46f4	Vendor Advisory
0b0ca135-0b70-47e7-9f44-1890c2a1c46c	https://access.redhat.com/security/cve/CVE-2026-34771
0b0ca135-0b70-47e7-9f44-1890c2a1c46c	https://bugzilla.redhat.com/show_bug.cgi?id=2454995
0b0ca135-0b70-47e7-9f44-1890c2a1c46c	https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-34771.json

Impacted products

Vendor	Product	Version
electronjs	electron	*
electronjs	electron	*
electronjs	electron	*
electronjs	electron	41.0.0
electronjs	electron	41.0.0
electronjs	electron	41.0.0
electronjs	electron	41.0.0
electronjs	electron	41.0.0
electronjs	electron	41.0.0
electronjs	electron	41.0.0
electronjs	electron	41.0.0
electronjs	electron	41.0.0
electronjs	electron	41.0.0
electronjs	electron	41.0.0
electronjs	electron	41.0.0
electronjs	electron	41.0.0

JSON

To clipboard

{
  "affected": [
    {
      "affectedData": [
        {
          "product": "electron",
          "vendor": "electron",
          "versions": [
            {
              "status": "affected",
              "version": "\u003c 38.8.6"
            },
            {
              "status": "affected",
              "version": "\u003e= 39.0.0-alpha.1, \u003c 39.8.0"
            },
            {
              "status": "affected",
              "version": "\u003e= 40.0.0-alpha.1, \u003c 40.7.0"
            },
            {
              "status": "affected",
              "version": "\u003e= 41.0.0-alpha.1, \u003c 41.0.0-beta.8"
            }
          ]
        }
      ],
      "source": "security-advisories@github.com"
    },
    {
      "affectedData": [
        {
          "cpes": [
            "cpe:/a:redhat:podman_desktop:1"
          ],
          "defaultStatus": "affected",
          "product": "Red Hat Build of Podman Desktop",
          "vendor": "Red Hat"
        },
        {
          "cpes": [
            "cpe:/a:redhat:podman_desktop:0"
          ],
          "defaultStatus": "affected",
          "product": "Red Hat Build of Podman Desktop - Tech Preview",
          "vendor": "Red Hat"
        }
      ],
      "source": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c"
    }
  ],
  "configurations": [
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:electronjs:electron:*:*:*:*:*:node.js:*:*",
              "matchCriteriaId": "9CE003A2-03CC-4355-AA17-2CBD204EC6C3",
              "versionEndExcluding": "38.8.6",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:electronjs:electron:*:*:*:*:*:node.js:*:*",
              "matchCriteriaId": "642CA6B2-000A-480D-B062-80593D150787",
              "versionEndExcluding": "39.8.0",
              "versionStartIncluding": "39.0.0",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:electronjs:electron:*:*:*:*:*:node.js:*:*",
              "matchCriteriaId": "E54036E0-1D1F-4265-A2F3-B9C1F88F65ED",
              "versionEndExcluding": "40.7.0",
              "versionStartIncluding": "40.0.0",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:electronjs:electron:41.0.0:alpha1:*:*:*:node.js:*:*",
              "matchCriteriaId": "A20225D6-F435-4D09-962D-B162F521B6AD",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:electronjs:electron:41.0.0:alpha2:*:*:*:node.js:*:*",
              "matchCriteriaId": "33712802-EB60-4E9A-83B8-9F2320B70CB4",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:electronjs:electron:41.0.0:alpha3:*:*:*:node.js:*:*",
              "matchCriteriaId": "9D0A9142-54FE-47BB-9FEB-5E97528E28FE",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:electronjs:electron:41.0.0:alpha4:*:*:*:node.js:*:*",
              "matchCriteriaId": "9E1D191F-DEAE-4DB3-9822-F31AF9FE3BAC",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:electronjs:electron:41.0.0:alpha5:*:*:*:node.js:*:*",
              "matchCriteriaId": "45A8192F-3D2C-4987-9BBE-7ECC3F71965D",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:electronjs:electron:41.0.0:alpha6:*:*:*:node.js:*:*",
              "matchCriteriaId": "EEA1A2E5-03DB-46CB-8427-7F31A8A7CE1C",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:electronjs:electron:41.0.0:beta1:*:*:*:node.js:*:*",
              "matchCriteriaId": "B2DFCE75-BD3F-4537-B5B8-14097E262EA2",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:electronjs:electron:41.0.0:beta2:*:*:*:node.js:*:*",
              "matchCriteriaId": "BC346E25-EA43-4615-8CDB-16D15D46E4FF",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:electronjs:electron:41.0.0:beta3:*:*:*:node.js:*:*",
              "matchCriteriaId": "FA5B3C00-CAFC-4995-BF35-9920F3039E77",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:electronjs:electron:41.0.0:beta4:*:*:*:node.js:*:*",
              "matchCriteriaId": "3672F3FB-6B5E-40FD-8A92-CB4DD6BC6A93",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:electronjs:electron:41.0.0:beta5:*:*:*:node.js:*:*",
              "matchCriteriaId": "9EE4F8AE-21D2-4815-85B7-B7ECCC0D5059",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:electronjs:electron:41.0.0:beta6:*:*:*:node.js:*:*",
              "matchCriteriaId": "D195760C-7DD9-4259-9042-EDE65AEAC1D6",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:electronjs:electron:41.0.0:beta7:*:*:*:node.js:*:*",
              "matchCriteriaId": "B370859F-24D3-4B25-B580-1A5B6DB94BFE",
              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
        }
      ]
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "Electron is a framework for writing cross-platform desktop applications using JavaScript, HTML and CSS. Prior to versions 38.8.6, 39.8.0, 40.7.0, and 41.0.0-beta.8, apps that register an asynchronous session.setPermissionRequestHandler() may be vulnerable to a use-after-free when handling fullscreen, pointer-lock, or keyboard-lock permission requests. If the requesting frame navigates or the window closes while the permission handler is pending, invoking the stored callback dereferences freed memory, which may lead to a crash or memory corruption. Apps that do not set a permission request handler, or whose handler responds synchronously, are not affected. This issue has been patched in versions 38.8.6, 39.8.0, 40.7.0, and 41.0.0-beta.8."
    }
  ],
  "id": "CVE-2026-34771",
  "lastModified": "2026-06-30T03:18:58.303",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "HIGH",
          "attackVector": "NETWORK",
          "availabilityImpact": "HIGH",
          "baseScore": 7.5,
          "baseSeverity": "HIGH",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "privilegesRequired": "NONE",
          "scope": "UNCHANGED",
          "userInteraction": "REQUIRED",
          "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H",
          "version": "3.1"
        },
        "exploitabilityScore": 1.6,
        "impactScore": 5.9,
        "source": "security-advisories@github.com",
        "type": "Secondary"
      },
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "HIGH",
          "baseScore": 8.8,
          "baseSeverity": "HIGH",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "privilegesRequired": "NONE",
          "scope": "UNCHANGED",
          "userInteraction": "REQUIRED",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H",
          "version": "3.1"
        },
        "exploitabilityScore": 2.8,
        "impactScore": 5.9,
        "source": "nvd@nist.gov",
        "type": "Primary"
      },
      {
        "cvssData": {
          "attackComplexity": "HIGH",
          "attackVector": "NETWORK",
          "availabilityImpact": "HIGH",
          "baseScore": 7.5,
          "baseSeverity": "HIGH",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "privilegesRequired": "NONE",
          "scope": "UNCHANGED",
          "userInteraction": "REQUIRED",
          "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H",
          "version": "3.1"
        },
        "exploitabilityScore": 1.6,
        "impactScore": 5.9,
        "source": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c",
        "type": "Secondary"
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2026-34771",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "total"
            }
          ],
          "role": "CISA Coordinator",
          "timestamp": "2026-04-07T00:00:00+00:00",
          "version": "2.0.3"
        }
      }
    ]
  },
  "published": "2026-04-04T00:16:17.980",
  "references": [
    {
      "source": "security-advisories@github.com",
      "tags": [
        "Vendor Advisory"
      ],
      "url": "https://github.com/electron/electron/security/advisories/GHSA-8337-3p73-46f4"
    },
    {
      "source": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c",
      "url": "https://access.redhat.com/security/cve/CVE-2026-34771"
    },
    {
      "source": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c",
      "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2454995"
    },
    {
      "source": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-34771.json"
    }
  ],
  "sourceIdentifier": "security-advisories@github.com",
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-416"
        }
      ],
      "source": "security-advisories@github.com",
      "type": "Primary"
    },
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-364"
        }
      ],
      "source": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c",
      "type": "Secondary"
    }
  ]
}

GHSA-8337-3P73-46F4

Vulnerability from github – Published: 2026-04-03 02:40 – Updated: 2026-04-06 23:10

Summary

Electron: Use-after-free in WebContents fullscreen, pointer-lock, and keyboard-lock permission callbacks

Details

Impact

Apps that register an asynchronous session.setPermissionRequestHandler() may be vulnerable to a use-after-free when handling fullscreen, pointer-lock, or keyboard-lock permission requests. If the requesting frame navigates or the window closes while the permission handler is pending, invoking the stored callback dereferences freed memory, which may lead to a crash or memory corruption.

Apps that do not set a permission request handler, or whose handler responds synchronously, are not affected.

Workarounds

Respond to permission requests synchronously, or deny fullscreen, pointer-lock, and keyboard-lock requests if an asynchronous flow is required.

Fixed Versions

41.0.0-beta.8
40.7.0
39.8.0
38.8.6

For more information

If there are any questions or comments about this advisory, please email security@electronjs.org

Severity

7.5 (High)


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

Show details on source website

JSON

To clipboard

{
  "affected": [
    {
      "package": {
        "ecosystem": "npm",
        "name": "electron"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "38.8.6"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "npm",
        "name": "electron"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "39.0.0-alpha.1"
            },
            {
              "fixed": "39.8.0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "npm",
        "name": "electron"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "40.0.0-alpha.1"
            },
            {
              "fixed": "40.7.0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "npm",
        "name": "electron"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "41.0.0-alpha.1"
            },
            {
              "fixed": "41.0.0-beta.8"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2026-34771"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-416"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2026-04-03T02:40:24Z",
    "nvd_published_at": "2026-04-04T00:16:17Z",
    "severity": "HIGH"
  },
  "details": "### Impact\nApps that register an asynchronous `session.setPermissionRequestHandler()` may be vulnerable to a use-after-free when handling fullscreen, pointer-lock, or keyboard-lock permission requests. If the requesting frame navigates or the window closes while the permission handler is pending, invoking the stored callback dereferences freed memory, which may lead to a crash or memory corruption.\n\nApps that do not set a permission request handler, or whose handler responds synchronously, are not affected.\n\n### Workarounds\nRespond to permission requests synchronously, or deny fullscreen, pointer-lock, and keyboard-lock requests if an asynchronous flow is required.\n\n### Fixed Versions\n* `41.0.0-beta.8`\n* `40.7.0`\n* `39.8.0`\n* `38.8.6`\n\n### For more information\nIf there are any questions or comments about this advisory, please email [security@electronjs.org](mailto:security@electronjs.org)",
  "id": "GHSA-8337-3p73-46f4",
  "modified": "2026-04-06T23:10:44Z",
  "published": "2026-04-03T02:40:24Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/electron/electron/security/advisories/GHSA-8337-3p73-46f4"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-34771"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/electron/electron"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ],
  "summary": "Electron: Use-after-free in WebContents fullscreen, pointer-lock, and keyboard-lock permission callbacks"
}

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.

Action not permitted

CVE-2026-34771 (GCVE-0-2026-34771)

FKIE_CVE-2026-34771

GHSA-8337-3P73-46F4

Impact

Workarounds

Fixed Versions

For more information

Tags

Sightings

Nomenclature