{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-34770", "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "state": "PUBLISHED", "assignerShortName": "GitHub_M", "dateReserved": "2026-03-30T19:54:55.555Z", "datePublished": "2026-04-03T23:46:11.095Z", "dateUpdated": "2026-04-08T03:55:36.380Z"}, "containers": {"cna": {"title": "Electron: Use-after-free in PowerMonitor on Windows and macOS", "problemTypes": [{"descriptions": [{"cweId": "CWE-416", "lang": "en", "description": "CWE-416: Use After Free", "type": "CWE"}]}], "metrics": [{"cvssV3_1": {"attackComplexity": "HIGH", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 7, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "REQUIRED", "vectorString": "CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H", "version": "3.1"}}], "references": [{"name": "https://github.com/electron/electron/security/advisories/GHSA-jjp3-mq3x-295m", "tags": ["x_refsource_CONFIRM"], "url": "https://github.com/electron/electron/security/advisories/GHSA-jjp3-mq3x-295m"}], "affected": [{"vendor": "electron", "product": "electron", "versions": [{"version": "< 38.8.6", "status": "affected"}, {"version": ">= 39.0.0-alpha.1, < 39.8.1", "status": "affected"}, {"version": ">= 40.0.0-alpha.1, < 40.8.0", "status": "affected"}, {"version": ">= 41.0.0-alpha.1, < 41.0.0-beta.8", "status": "affected"}]}], "providerMetadata": {"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "shortName": "GitHub_M", "dateUpdated": "2026-04-03T23:46:11.095Z"}, "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, 39.8.1, 40.8.0, and 41.0.0-beta.8, apps that use the powerMonitor module may be vulnerable to a use-after-free. After the native PowerMonitor object is garbage-collected, the associated OS-level resources (a message window on Windows, a shutdown handler on macOS) retain dangling references. A subsequent session-change event (Windows) or system shutdown (macOS) dereferences freed memory, which may lead to a crash or memory corruption. All apps that access powerMonitor events (suspend, resume, lock-screen, etc.) are potentially affected. The issue is not directly renderer-controllable. This issue has been patched in versions 38.8.6, 39.8.1, 40.8.0, and 41.0.0-beta.8."}], "source": {"advisory": "GHSA-jjp3-mq3x-295m", "discovery": "UNKNOWN"}}, "adp": [{"metrics": [{"other": {"type": "ssvc", "content": {"timestamp": "2026-04-07T00:00:00+00:00", "options": [{"Exploitation": "none"}, {"Automatable": "no"}, {"Technical Impact": "total"}], "role": "CISA Coordinator", "version": "2.0.3", "id": "CVE-2026-34770"}}}], "title": "CISA ADP Vulnrichment", "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-04-08T03:55:36.380Z"}}]}}

{"dataType": "CVE_RECORD", "containers": {"adp": [{"title": "CISA ADP Vulnrichment", "metrics": [{"other": {"type": "ssvc", "content": {"id": "CVE-2026-34770", "role": "CISA Coordinator", "options": [{"Exploitation": "none"}, {"Automatable": "no"}, {"Technical Impact": "total"}], "version": "2.0.3", "timestamp": "2026-04-06T19:09:58.375370Z"}}}], "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-04-06T19:10:11.362Z"}}], "cna": {"title": "Electron: Use-after-free in PowerMonitor on Windows and macOS", "source": {"advisory": "GHSA-jjp3-mq3x-295m", "discovery": "UNKNOWN"}, "metrics": [{"cvssV3_1": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 7, "attackVector": "LOCAL", "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:L/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": "< 38.8.6"}, {"status": "affected", "version": ">= 39.0.0-alpha.1, < 39.8.1"}, {"status": "affected", "version": ">= 40.0.0-alpha.1, < 40.8.0"}, {"status": "affected", "version": ">= 41.0.0-alpha.1, < 41.0.0-beta.8"}]}], "references": [{"url": "https://github.com/electron/electron/security/advisories/GHSA-jjp3-mq3x-295m", "name": "https://github.com/electron/electron/security/advisories/GHSA-jjp3-mq3x-295m", "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, 39.8.1, 40.8.0, and 41.0.0-beta.8, apps that use the powerMonitor module may be vulnerable to a use-after-free. After the native PowerMonitor object is garbage-collected, the associated OS-level resources (a message window on Windows, a shutdown handler on macOS) retain dangling references. A subsequent session-change event (Windows) or system shutdown (macOS) dereferences freed memory, which may lead to a crash or memory corruption. All apps that access powerMonitor events (suspend, resume, lock-screen, etc.) are potentially affected. The issue is not directly renderer-controllable. This issue has been patched in versions 38.8.6, 39.8.1, 40.8.0, 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": "2026-04-03T23:46:11.095Z"}}}, "cveMetadata": {"cveId": "CVE-2026-34770", "state": "PUBLISHED", "dateUpdated": "2026-04-08T03:55:36.380Z", "dateReserved": "2026-03-30T19:54:55.555Z", "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "datePublished": "2026-04-03T23:46:11.095Z", "assignerShortName": "GitHub_M"}, "dataVersion": "5.2"}

{"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, 39.8.1, 40.8.0, and 41.0.0-beta.8, apps that use the powerMonitor module may be vulnerable to a use-after-free. After the native PowerMonitor object is garbage-collected, the associated OS-level resources (a message window on Windows, a shutdown handler on macOS) retain dangling references. A subsequent session-change event (Windows) or system shutdown (macOS) dereferences freed memory, which may lead to a crash or memory corruption. All apps that access powerMonitor events (suspend, resume, lock-screen, etc.) are potentially affected. The issue is not directly renderer-controllable. This issue has been patched in versions 38.8.6, 39.8.1, 40.8.0, and 41.0.0-beta.8."}], "id": "CVE-2026-34770", "lastModified": "2026-04-07T13:20:55.200", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "HIGH", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 7.0, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "REQUIRED", "vectorString": "CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H", "version": "3.1"}, "exploitabilityScore": 1.0, "impactScore": 5.9, "source": "security-advisories@github.com", "type": "Secondary"}]}, "published": "2026-04-04T00:16:17.823", "references": [{"source": "security-advisories@github.com", "url": "https://github.com/electron/electron/security/advisories/GHSA-jjp3-mq3x-295m"}], "sourceIdentifier": "security-advisories@github.com", "vulnStatus": "Undergoing Analysis", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-416"}], "source": "security-advisories@github.com", "type": "Primary"}]}

{}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[0,38.8.6)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[39.0.0-alpha.1,39.8.1)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[40.0.0-alpha.1,40.8.0)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[41.0.0-alpha.1,41.0.0-beta.8)"}}], "enrichment": {"confidence": 100.0, "confidence_source": "matching", "scores": [{"score": 100.0, "source": "matching"}]}, "original": {"product": "electron", "source": "cna", "vendor": "electron"}, "product": "electron", "vendor": "electron"}], "analysis": {"en": {"generated_at": "2026-04-04T03:51:21.312402+00:00", "value": {"mitigation_remediation": ["Update Electron to version 38.8.6, 39.8.1, 40.8.0, 41.0.0\u2011beta.8, or any later release that contains the patch.", "Verify that powerMonitor events continue to function correctly after the upgrade to confirm the fix.", "If an upgrade is not immediately possible, avoid using the powerMonitor module or ensure that all listeners are removed before the application terminates to prevent dangling references.", "Continuously monitor Electron security advisories for updates or additional guidance."], "summary": {"action": "Immediate Patch", "impact": "Memory Corruption"}, "threat_synthesis": {"affected_systems": "The vulnerability affects Electron releases prior to 38.8.6, 39.8.1, 40.8.0, and 41.0.0\u2011beta.8. All desktop applications built with the Electron framework that consume powerMonitor events\u2014suspend, resume, lock\u2011screen, etc.\u2014are potentially impacted. The defect resides in Electron\u2019s core and is present on both Windows and macOS platforms.", "description_and_impact": "Electron applications that register for powerMonitor events are vulnerable to a use-after-free flaw (CWE\u2011416). The bug occurs when the native PowerMonitor object is garbage\u2011collected while the OS\u2011level resources it created\u2014such as a Windows message window or a macOS shutdown handler\u2014retain dangling references. A subsequent session\u2011change event on Windows or system shutdown on macOS dereferences freed memory, potentially causing a crash or memory corruption.", "risk_and_exploitability": "The CVSS score of 7.0 indicates high severity. EPSS data is not available and the vulnerability is not listed in the CISA KEV catalog, implying no publicly documented exploits. Based on the description, it is inferred that the likely attack vector involves triggering a system session\u2011change event or a shutdown, which typically would require local or privileged access. Therefore, while the impact of a crash or memory corruption could be significant, the likelihood of exploitation is limited to environments where an attacker can manipulate these OS\u2011level events."}}}}, "created": "2026-04-06T21:21:40.453239+00:00", "updated": "2026-04-06T22:21:18.160415+00:00", "vendors": ["electron", "electron$PRODUCT$electron"]}