CVE-2026-34769

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Prior to versions 38.8.6, 39.8.0, 40.7.0, and 41.0.0-beta.8, an undocumented commandLineSwitches webPreference allowed arbitrary switches to be appended to the renderer process command line. Apps that construct webPreferences by spreading untrusted configuration objects may inadvertently allow an attacker to inject switches that disable renderer sandboxing or web security controls. Apps are only affected if they construct webPreferences from external or untrusted input without an allowlist. Apps that use a fixed, hardcoded webPreferences object 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."}, {"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, 39.8.0, 40.7.0 y 41.0.0-beta.8, una webPreference commandLineSwitches no documentada permit\u00eda que se a\u00f1adieran switches arbitrarios a la l\u00ednea de comandos del proceso de renderizado. Las aplicaciones que construyen webPreferences extendiendo objetos de configuraci\u00f3n no confiables pueden permitir inadvertidamente a un atacante inyectar switches que deshabiliten el sandboxing del renderizador o los controles de seguridad web. Las aplicaciones solo se ven afectadas si construyen webPreferences a partir de entradas externas o no confiables sin una lista de permitidos. Las aplicaciones que usan un objeto webPreferences fijo y codificado de forma r\u00edgida no se ven afectadas. Este problema ha sido parcheado en las versiones 38.8.6, 39.8.0, 40.7.0 y 41.0.0-beta.8."}], "id": "CVE-2026-34769", "lastModified": "2026-07-24T22:10:00.140", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "HIGH", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 7.7, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "scope": "CHANGED", "userInteraction": "REQUIRED", "vectorString": "CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:H", "version": "3.1"}, "exploitabilityScore": 1.0, "impactScore": 6.0, "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": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 7.7, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "scope": "CHANGED", "userInteraction": "REQUIRED", "vectorString": "CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:H", "version": "3.1"}, "exploitabilityScore": 1.0, "impactScore": 6.0, "source": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c", "type": "Secondary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-34769", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "total"}], "role": "CISA Coordinator", "timestamp": "2026-04-07T00:00:00+00:00", "version": "2.0.3"}}]}, "published": "2026-04-04T00:16:17.657", "references": [{"source": "security-advisories@github.com", "tags": ["Vendor Advisory"], "url": "https://github.com/electron/electron/security/advisories/GHSA-9wfr-w7mm-pc7f"}, {"source": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c", "url": "https://access.redhat.com/security/cve/CVE-2026-34769"}, {"source": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2455004"}, {"source": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c", "url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-34769.json"}], "sourceIdentifier": "security-advisories@github.com", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-88"}, {"lang": "en", "value": "CWE-912"}], "source": "security-advisories@github.com", "type": "Secondary"}, {"description": [{"lang": "en", "value": "CWE-88"}], "source": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c", "type": "Secondary"}]}

{"bugzilla": {"description": "Electron: Electron: Arbitrary code execution and security bypass via undocumented command-line switches", "id": "2455004", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2455004"}, "csaw": false, "cvss3": {"cvss3_base_score": "7.7", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:H", "status": "draft"}, "cwe": "CWE-88", "details": ["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, an undocumented commandLineSwitches webPreference allowed arbitrary switches to be appended to the renderer process command line. Apps that construct webPreferences by spreading untrusted configuration objects may inadvertently allow an attacker to inject switches that disable renderer sandboxing or web security controls. Apps are only affected if they construct webPreferences from external or untrusted input without an allowlist. Apps that use a fixed, hardcoded webPreferences object 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.", "A flaw was found in Electron, a framework for building desktop applications. This vulnerability arises from an undocumented `commandLineSwitches` webPreference that allows arbitrary command-line switches to be appended to the renderer process. A remote attacker could exploit this by providing malicious input to applications that construct `webPreferences` from untrusted sources. Successful exploitation could disable critical security controls like sandboxing, potentially leading to arbitrary code execution, privilege escalation, or sensitive information disclosure."], "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-2026-34769", "package_state": [{"cpe": "cpe:/a:redhat:podman_desktop:1", "fix_state": "Affected", "package_name": "podman-desktop-macos-1-0", "product_name": "Red Hat Build of Podman Desktop"}, {"cpe": "cpe:/a:redhat:podman_desktop:1", "fix_state": "Affected", "package_name": "podman-desktop-windows-1-0", "product_name": "Red Hat Build of Podman Desktop"}, {"cpe": "cpe:/a:redhat:podman_desktop:0", "fix_state": "Affected", "package_name": "rhdesktop/rh-podman-desktop-ext-openshift-local-rhel10", "product_name": "Red Hat Build of Podman Desktop - Tech Preview"}], "public_date": "2026-04-03T23:33:55Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-34769\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-34769\nhttps://github.com/electron/electron/security/advisories/GHSA-9wfr-w7mm-pc7f"], "threat_severity": "Important"}

{"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.1,39.8.0)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[40.0.0-alpha.1,40.7.0)"}}, {"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": "2026-04-09T17:32:44.640308+00:00", "value": {"mitigation_remediation": ["Upgrade Electron to version 38.8.6, 39.8.0, 40.7.0, 41.0.0\u2011beta.8 or later.", "Validate and sanitize any external input used to build the webPreferences object, or implement an allowlist of permitted options.", "If an upgrade is pending, explicitly clear or restrict the undocumented commandLineSwitches property when constructing webPreferences to prevent injection."], "summary": {"action": "Apply Patch", "impact": "Privilege escalation through renderer switch injection"}, "threat_synthesis": {"affected_systems": "Electron framework versions prior to 38.8.6, 39.8.0, 40.7.0 and 41.0.0\u2011beta.8 are affected when the webPreferences configuration is constructed from external or untrusted input. Applications that use fixed, hard\u2011coded webPreferences are not impacted. The issue exists across all alpha and beta builds up to 41.0.0\u2011beta.8 as listed in the CPE identifiers.", "description_and_impact": "Electron applications that build the webPreferences object from untrusted data can inject arbitrary command line switches into the renderer process. The injected switches can disable sandboxing or web security controls, allowing a malicious user to elevate privileges or execute code within the renderer context. This vulnerability aligns with CWE\u201188 (Command Injection) and CWE\u2011912 (Unvalidated URL Parameters).", "risk_and_exploitability": "The CVSS score of 7.8 indicates high severity, and the EPSS <1% suggests low current exploit probability. No known exploitation is listed in KEV, but attackers who can supply or modify the configuration data can enable the vulnerability. Once the renderer sandbox is disabled, an attacker can execute arbitrary code with the renderer\u2019s privileges, potentially leading to system compromise. The attack requires local or remote control over application configuration; when such control is present, the risk is significant."}}}}, "created": "2026-04-06T21:21:44.667444+00:00", "updated": "2026-04-10T09:45:30.291401+00:00", "vendors": ["electron", "electron$PRODUCT$electron"]}