CVE-2026-70598: Electron Off-screen Rendering Trusts GPU-supplied Geometry Vulnerability
LOWCVE-2026-70598 is a LOW (CVSS 3.9) off-screen rendering trusts gpu-supplied geometry vulnerability (CWE-125: Out-of-bounds Read) affecting Electron libraries in the npm ecosystem. The issue involves off-screen rendering trusts gpu-supplied geometry over shared-memory size. Remediation is available by upgrading affected packages to version 39.8.10, 40.9.0, 41.2.1, 42.0.0-beta.3.
CVE-2026-70598 at a Glance
Security Impact
CVSS: 3.9
The security impact metrics below are parsed directly from the CVSS v3.1 vector string (CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:C/C:L/I:N/A:L).
How to Fix CVE-2026-70598
To remediate this vulnerability, upgrade all affected Electron dependencies to a patched release. Both direct and transitive dependencies should be checked, as frameworks or security libraries may pull in vulnerable versions transitively.
npm install electron@39.8.10npm install electron@40.9.0npm install electron@41.2.1npm install electron@42.0.0-beta.3Run the following command in your project directory to verify that all resolved dependencies use the patched release:
npm ls electronHow to Check if You Are Affected
To determine whether your Node.js application is affected by CVE-2026-70598, inspect your project dependencies using npm:
npm ls electronAnalyze the terminal output to locate any version of Electron in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 39.8.10), your application is affected.
Note: The npm ls electron command inspects dependencies declared in your package.json and lockfile; it does not perform automated runtime dynamic scanning.
Technical Details
Vulnerability Mechanism & Technical Analysis
This vulnerability is classified under CWE-125: Out-of-bounds Read, where the product reads data past the end, or before the beginning, of the intended buffer. In Electron, software state validation or input boundaries are circumvented during processing. Review the official source advisory statement below for specific affected components, classes, and reproduction details.
Source Advisory Statement
CVE-2026-70598 Affected Electron Versions
4 component(s)| Product / Package | Ecosystem | Affected Versions | Fixed Version |
|---|---|---|---|
|
electron
|
npm |
< 39.8.10
|
39.8.10
|
|
electron
|
npm |
≥ 40.0.0-alpha.1
< 40.9.0
|
40.9.0
|
|
electron
|
npm |
≥ 41.0.0-alpha.1
< 41.2.1
|
41.2.1
|
|
electron
|
npm |
≥ 42.0.0-alpha.1
< 42.0.0-beta.3
|
42.0.0-beta.3
|
References
Frequently Asked Questions
What is CVE-2026-70598?
Which Electron versions are affected?
What version fixes CVE-2026-70598?
Is electron affected?
What is the CVSS score of CVE-2026-70598?
What CWE is associated with CVE-2026-70598?
How can I check npm dependencies for CVE-2026-70598?
Machine-readable OSV JSON
OSV v1.5 Schema
{
"schema_version" : "1.4.0",
"id" : "GHSA-pfmc-3mgc-p6fp",
"modified" : "2026-08-05T15:27:27Z",
"published" : "2026-08-05T15:27:27Z",
"aliases" : [ "CVE-2026-70598" ],
"summary" : "Electron: Off-screen rendering trusts GPU-supplied geometry over shared-memory size",
"details" : "### Impact\nIn offscreen rendering mode, frame data received from the GPU process was not fully validated by the main process. A compromised GPU process could cause the main process to read out-of-bounds memory while producing `paint` event images, disclosing memory or crashing the app.\n\nApps are only affected if they use offscreen rendering (`webPreferences.offscreen`) and an attacker has separately gained code execution in the GPU process. Apps that do not use offscreen rendering are not affected.\n\n### Workarounds\nThere are no app side workarounds, you must update to a patched version of Electron.\n\n### Fixed Versions\n* `42.0.0-beta.3`\n* `41.2.1`\n* `40.9.0`\n* `39.8.10`\n\n### For more information\nIf you have any questions or comments about this advisory, email us at [security@electronjs.org](mailto:security@electronjs.org)",
"severity" : [ {
"type" : "CVSS_V3",
"score" : "CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:C/C:L/I:N/A:L"
} ],
"affected" : [ {
"package" : {
"ecosystem" : "npm",
"name" : "electron"
},
"ranges" : [ {
"type" : "ECOSYSTEM",
"events" : [ {
"introduced" : "0"
}, {
"fixed" : "39.8.10"
} ]
} ]
}, {
"package" : {
"ecosystem" : "npm",
"name" : "electron"
},
"ranges" : [ {
"type" : "ECOSYSTEM",
"events" : [ {
"introduced" : "40.0.0-alpha.1"
}, {
"fixed" : "40.9.0"
} ]
} ]
}, {
"package" : {
"ecosystem" : "npm",
"name" : "electron"
},
"ranges" : [ {
"type" : "ECOSYSTEM",
"events" : [ {
"introduced" : "41.0.0-alpha.1"
}, {
"fixed" : "41.2.1"
} ]
} ]
}, {
"package" : {
"ecosystem" : "npm",
"name" : "electron"
},
"ranges" : [ {
"type" : "ECOSYSTEM",
"events" : [ {
"introduced" : "42.0.0-alpha.1"
}, {
"fixed" : "42.0.0-beta.3"
} ]
} ]
} ],
"references" : [ {
"type" : "WEB",
"url" : "https://github.com/electron/electron/security/advisories/GHSA-pfmc-3mgc-p6fp"
}, {
"type" : "WEB",
"url" : "https://github.com/electron/electron/commit/2c24640e7b0b9c74fe9f44bce0fde138340ff4fb"
}, {
"type" : "PACKAGE",
"url" : "https://github.com/electron/electron"
} ],
"database_specific" : {
"cwe_ids" : [ "CWE-125" ],
"severity" : "LOW",
"github_reviewed" : true,
"github_reviewed_at" : "2026-08-05T15:27:27Z",
"nvd_published_at" : null
}
}