> CVE-2026-102677 [HIGH]

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PUBLISHED
2026-09-29 18:17
MODIFIED
2026-09-29 18:17
CVSS_SCORE V3
7.8
EPSS (Prob. Exploit)
0.10%
Top 99.2%
DATA SOURCES:
NVD 🔗 2026-09-29 RED HAT 🔗 2026-10-04 CWE MITRE 🔗 2026-10-01 FIRST EPSS 🔗 2026-10-22 GITHUB 🔗 2026-10-15 OSV 🔗 2026-10-19

> DESCRIPTION

Electron is a framework for writing cross-platform desktop applications using JavaScript, HTML and CSS. From 42.3.3 until 42.10.0, 43.5.0, and 44.0.0-beta.6, Electron's sandboxed preload code cache did not verify that a cached entry matched the preload it was served for. A compromised renderer could write attacker-controlled cache data and cause Electron to reuse it for a later load, executing the renderer's code in the more privileged preload context. The issue affects applications that load untrusted content. This issue is fixed in versions 42.10.0, 43.5.0, and 44.0.0-beta.6.

> AFFECTED_PRODUCTS

ℹ️ Aucun produit affecté n'a encore été publié par NVD pour cette CVE.

> CVSS V3 METRICS

CVSS_VECTOR
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H
EXPLOITABILITY
1.1
IMPACT
6.0

> MÉTRIQUES CVSS DÉTAILLÉES

CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H
Métrique Valeur Interprétation
AV (Vecteur d'Attaque)
Attack Vector
Local (L)
Exploit nécessite un accès local au système
AC (Complexité d'Attaque)
Attack Complexity
High (H)
Conditions spécifiques doivent être réunies pour exploiter
PR (Privilèges Requis)
Privileges Required
Low (L)
Authentifié avec compte utilisateur basique
UI (Interaction Utilisateur)
User Interaction
None (N)
Aucune interaction utilisateur nécessaire
S (Périmètre)
Scope
Changed (C)
Impact s'étend au-delà du composant compromis
C (Impact Confidentialité)
Confidentiality Impact
High (H)
Divulgation totale d'informations
I (Impact Intégrité)
Integrity Impact
High (H)
Modification totale des données possible
A (Impact Disponibilité)
Availability Impact
High (H)
Interruption totale du service possible

> RÉSUMÉ DES IMPACTS

Confidentialité
High
Divulgation totale d'informations
Intégrité
High
Modification totale des données possible
Disponibilité
High
Interruption totale du service possible

> WEAKNESSES

CWE-20 CWE-345

> CWE DETAILED DESCRIPTIONS

CWE-20: Improper Input Validation - The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly. | CWE-345: Insufficient Verification of Data Authenticity - The product does not sufficiently verify the origin or authenticity of data, in a way that causes it to accept invalid data.

> RED HAT SEVERITY ASSESSMENT

THREAT SEVERITY
Important

> GITHUB SECURITY ADVISORY

GHSA-qmv3-fv6v-rmhq HIGH

Electron: Sandboxed preload code cache can be poisoned by a compromised renderer

AFFECTED PACKAGES:
NPM / electron
>= 44.0.0-alpha.1, < 44.0.0-beta.6
Fixed in: 44.0.0-beta.6
NPM / electron
>= 43.0.0-beta.1, < 43.5.0
Fixed in: 43.5.0
NPM / electron
>= 42.3.3, < 42.10.0
Fixed in: 42.10.0

> OSV (GOOGLE OPEN SOURCE VULNERABILITIES)

Electron: Sandboxed preload code cache can be poisoned by a compromised renderer

AFFECTED PACKAGES:
Unknown / Unknown
24 versions affected
ALIASES:
GHSA-qmv3-fv6v-rmhq

> HISTORIQUE DES MODIFICATIONS

Première apparition
29/09/2026 18:17
Source: NVD
📊 ENRICHISSEMENT 04/10/2026 05:02
REDHAT
Champ modifié: Sévérité Red Hat
Ancienne valeur:
N/A
Nouvelle valeur:
{ "threat_severity": "Important", "severity_scale": null }
📊 ENRICHISSEMENT 04/10/2026 05:02
REDHAT
Champ modifié: Red Hat
Ancienne valeur:
Non
Nouvelle valeur:
Oui
📊 ENRICHISSEMENT 01/10/2026 06:01
CWE
Champ modifié: Description CWE
Ancienne valeur:
N/A
Nouvelle valeur:
CWE-20: Improper Input Validation - The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process...
Total des modifications: 3 Dernière mise à jour: 2 weeks ago

> REFERENCES

https://github.com/electron/electron/commit/000453e399bd1dee5e86376cdd9ece5fc071...
https://github.com/electron/electron/commit/25ba8be57c65a83d8c14ebb8aa37693df17a...
https://github.com/electron/electron/commit/c38d6fd68756f04647ea857bdb6a2abec332...
https://github.com/electron/electron/pull/52480
https://github.com/electron/electron/releases/tag/v42.10.0
https://github.com/electron/electron/releases/tag/v43.5.0
https://github.com/electron/electron/releases/tag/v44.0.0-beta.6
https://github.com/electron/electron/security/advisories/GHSA-qmv3-fv6v-rmhq
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