Electron: contextBridge object copy honors prototype setters (electron electron)
At a glance
- Source
- NVD
- EPSS
- EPSS 0.56 % · percentile 47 ()
- State
- PUBLISHED
- Published
- Updated
- Assigner
- GitHub_M
- NVD status
- Analyzed
Description
Electron is a framework for writing cross-platform desktop applications using JavaScript, HTML and CSS. Prior to 39.8.9, 40.9.2, 41.2.2, and 42.0.0-beta.4, objects copied across the contextBridge boundary from untrusted content could carry an attacker-influenced prototype, enabling prototype-pollution-style attacks against preload code despite context isolation being enabled. Apps are only affected if their preload code accepts object arguments from untrusted content and reads properties from them without own-property checks, while apps that only accept primitive arguments or validate object arguments are not affected. This issue is fixed in 39.8.9, 40.9.2, 41.2.2, and 42.0.0-beta.4.
Weaknesses (CWE)
- CWE-1321 — Improperly Controlled Modification of Object Prototype Attributes
References
- https://github.com/electron/electron/security/advisories/GHSA-ff2p-hmqr-hxm4
- https://github.com/electron/electron/pull/51083
- https://github.com/electron/electron/pull/51084
- https://github.com/electron/electron/pull/51085
- https://github.com/electron/electron/pull/51086
- https://github.com/electron/electron/commit/17d5d26499cd279fab48f5f26527f8edc02a7713
- https://github.com/electron/electron/commit/23a6efb714dec80e2cf45d3054d18d701162e4dd
- https://github.com/electron/electron/commit/4ac50292d552fb510eb778392620c85308770a55
- https://github.com/electron/electron/commit/5b699544cbbed51bedb7c60d75c8c42be5825737
- https://github.com/electron/electron/releases/tag/v39.8.9
- https://github.com/electron/electron/releases/tag/v40.9.2
- https://github.com/electron/electron/releases/tag/v41.2.2
- https://github.com/electron/electron/releases/tag/v42.0.0-beta.4
Scores
| Version | Score | Vector | Scored by |
|---|---|---|---|
| CVSS 3.1 | MEDIUM 5.4 | CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:L/I:L/A:N | GitHub_M |
| CVSS 3.1 | MEDIUM 5.4 | CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:L/I:L/A:N | NVD · security-advisories@github.com (Secondary) |
Advisories
- GHSA-ff2p-hmqr-hxm4 — Electron: contextBridge object copy honors prototype setters
European references
- ENISA EUVD · EUVD-2026-53543
- GCVE · GCVE-0-2026-70610
Affected configurations (NVD CPE)
cpe:2.3:a:electronjs:electron:*:*:*:*:*:node.js:*:*< 39.8.9cpe:2.3:a:electronjs:electron:*:*:*:*:*:node.js:*:*≥ 40.0.0 < 40.9.2cpe:2.3:a:electronjs:electron:*:*:*:*:*:node.js:*:*≥ 41.0.0 < 41.2.2cpe:2.3:a:electronjs:electron:42.0.0:alpha1:*:*:*:node.js:*:*cpe:2.3:a:electronjs:electron:42.0.0:alpha2:*:*:*:node.js:*:*cpe:2.3:a:electronjs:electron:42.0.0:alpha3:*:*:*:node.js:*:*cpe:2.3:a:electronjs:electron:42.0.0:alpha4:*:*:*:node.js:*:*cpe:2.3:a:electronjs:electron:42.0.0:alpha5:*:*:*:node.js:*:*cpe:2.3:a:electronjs:electron:42.0.0:alpha6:*:*:*:node.js:*:*cpe:2.3:a:electronjs:electron:42.0.0:beta1:*:*:*:node.js:*:*cpe:2.3:a:electronjs:electron:42.0.0:beta2:*:*:*:node.js:*:*cpe:2.3:a:electronjs:electron:42.0.0:beta3:*:*:*:node.js:*:*
Affected products
| Product | Versions |
|---|---|
| electron · electron | affected < 39.8.9 ; affected >= 40.0.0-alpha.1, < 40.9.2 ; affected >= 41.0.0-alpha.1, < 41.2.2 ; affected >= 42.0.0-alpha.1, < 42.0.0-beta.4 |
Sources
| Source | Licence |
|---|---|
| CVE List (CVEProject cvelistV5) | CVE Program Terms of Use |
| EPSS (FIRST.org) | FIRST — attribution requested |
| ENISA EUVD | ENISA — reproduction authorised, source acknowledged |
| NVD (NIST) via fkie-cad/nvd-json-data-feeds | Public domain — this product uses data from the NVD API but is not endorsed or certified by the NVD |