CVE-2026-34775

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Prior to versions 38.8.6, 39.8.4, 40.8.4, and 41.0.0, the nodeIntegrationInWorker webPreference was not correctly scoped in all configurations. In certain process-sharing scenarios, workers spawned in frames configured with nodeIntegrationInWorker: false could still receive Node.js integration. Apps are only affected if they enable nodeIntegrationInWorker. Apps that do not use nodeIntegrationInWorker are not affected. This issue has been patched in versions 38.8.6, 39.8.4, 40.8.4, and 41.0.0."}, {"lang": "es", "value": "Electron es un framework para escribir aplicaciones de escritorio multiplataforma usando JavaScript, HTML y CSS. Antes de las versiones 38.8.6, 39.8.4, 40.8.4 y 41.0.0, la webPreference nodeIntegrationInWorker no estaba correctamente delimitada en todas las configuraciones. En ciertos escenarios de compartici\u00f3n de procesos, los workers generados en frames configurados con nodeIntegrationInWorker: false a\u00fan pod\u00edan recibir integraci\u00f3n de Node.js. Las aplicaciones solo se ven afectadas si habilitan nodeIntegrationInWorker. Las aplicaciones que no usan nodeIntegrationInWorker no se ven afectadas. Este problema ha sido parcheado en las versiones 38.8.6, 39.8.4, 40.8.4 y 41.0.0."}], "id": "CVE-2026-34775", "lastModified": "2026-07-24T22:10:00.140", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "HIGH", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 6.8, "baseSeverity": "MEDIUM", "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:N", "version": "3.1"}, "exploitabilityScore": 1.6, "impactScore": 5.2, "source": "security-advisories@github.com", "type": "Secondary"}, {"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 9.8, "baseSeverity": "CRITICAL", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H", "version": "3.1"}, "exploitabilityScore": 3.9, "impactScore": 5.9, "source": "nvd@nist.gov", "type": "Primary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-34775", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "total"}], "role": "CISA Coordinator", "timestamp": "2026-04-07T00:00:00+00:00", "version": "2.0.3"}}]}, "published": "2026-04-04T00:16:18.597", "references": [{"source": "security-advisories@github.com", "tags": ["Vendor Advisory"], "url": "https://github.com/electron/electron/security/advisories/GHSA-xwr5-m59h-vwqr"}], "sourceIdentifier": "security-advisories@github.com", "vulnStatus": "Analyzed", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-653"}], "source": "security-advisories@github.com", "type": "Secondary"}]}

{"bugzilla": {"description": "Electron: Electron: Arbitrary code execution and information disclosure due to incorrect Node.js integration scoping", "id": "2455023", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2455023"}, "csaw": false, "cvss3": {"cvss3_base_score": "6.8", "cvss3_scoring_vector": "CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:N", "status": "draft"}, "cwe": "CWE-266", "details": ["Electron is a framework for writing cross-platform desktop applications using JavaScript, HTML and CSS. Prior to versions 38.8.6, 39.8.4, 40.8.4, and 41.0.0, the nodeIntegrationInWorker webPreference was not correctly scoped in all configurations. In certain process-sharing scenarios, workers spawned in frames configured with nodeIntegrationInWorker: false could still receive Node.js integration. Apps are only affected if they enable nodeIntegrationInWorker. Apps that do not use nodeIntegrationInWorker are not affected. This issue has been patched in versions 38.8.6, 39.8.4, 40.8.4, and 41.0.0.", "A flaw was found in Electron, a framework for building desktop applications. In specific scenarios where applications enable Node.js integration, a misconfiguration could allow workers, which are background scripts, to gain Node.js capabilities even when explicitly disabled. This could enable a remote attacker to execute arbitrary code or access sensitive information within the application. Apps are only affected if they enable nodeIntegrationInWorker. Apps that do not use nodeIntegrationInWorker are not affected."], "mitigation": {"lang": "en:us", "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."}, "name": "CVE-2026-34775", "package_state": [{"cpe": "cpe:/a:redhat:podman_desktop:1", "fix_state": "Fix deferred", "package_name": "podman-desktop-macos-1-0", "product_name": "Red Hat Build of Podman Desktop"}, {"cpe": "cpe:/a:redhat:podman_desktop:1", "fix_state": "Fix deferred", "package_name": "podman-desktop-windows-1-0", "product_name": "Red Hat Build of Podman Desktop"}, {"cpe": "cpe:/a:redhat:podman_desktop:0", "fix_state": "Fix deferred", "package_name": "rhdesktop/rh-podman-desktop-ext-openshift-local-rhel10", "product_name": "Red Hat Build of Podman Desktop - Tech Preview"}], "public_date": "2026-04-03T23:55:20Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-34775\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-34775\nhttps://github.com/electron/electron/security/advisories/GHSA-xwr5-m59h-vwqr"], "threat_severity": "Moderate"}

{"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.1,39.8.4)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[40.0.0-alpha.1,40.8.4)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[41.0.0-alpha.1,41.0.0)"}}], "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": "2026-04-07T01:46:17.092655+00:00", "value": {"mitigation_remediation": ["Upgrade Electron to version 38.8.6 or newer, 39.8.4 or newer, 40.8.4 or newer, or 41.0.0 or newer.", "Verify that nodeIntegrationInWorker is disabled in any rendering contexts that do not require Node.js integration."], "summary": {"action": "Immediate Patch", "impact": "Potential code execution via unintended Node.js integration in workers"}, "threat_synthesis": {"affected_systems": "This vulnerability affects Electron framework versions older than 38.8.6, 39.8.4, 40.8.4 and 41.0.0 when the nodeIntegrationInWorker option is enabled. Applications that never enable this setting are not impacted. Developers should verify whether their projects set webPreferences.nodeIntegrationInWorker:true and upgrade if necessary.", "description_and_impact": "Electron applications that enable the nodeIntegrationInWorker option can unintentionally expose the Node.js runtime to web workers. Before the patched releases, the renderer process did not correctly scope this preference, allowing workers created in frames marked nodeIntegrationInWorker:false to still receive Node.js integration. This flaw enables an attacker to execute arbitrary JavaScript within the Node context, potentially leading to critical code\u2011execution or privilege escalation inside the desktop application. The weakness aligns with authorization bypass using privilege and improper restriction of operations categories.", "risk_and_exploitability": "The advisory assigns a CVSS score of 6.8, indicating moderate severity. The EPSS score is below 1%, suggesting a low exploitation probability, and the flaw is not listed in the KEV catalog. Based on the description, it is inferred that exploitation would require an attacker to supply a malicious worker script or otherwise inject code into an Electron app that has enabled nodeIntegrationInWorker. Because the vulnerability is local to the application runtime, it is most relevant to scenarios where an attacker has access to the host machine or compromised content within the app's renderer. Overall risk remains moderate with a low likelihood of exploitation."}}}}, "created": "2026-04-06T20:27:53.797318+00:00", "updated": "2026-04-07T07:16:23.599786+00:00", "vendors": ["electron", "electron$PRODUCT$electron"]}