CriticalCVE-2026-102676

Electron: <webview> can enable Node.js integration in Web Workers despite embedder restrictions (CVE-2026-102676)

Published 29.09.2026Last modified 15.10.2026Sources: CVE.org, OSV, Hersteller

What is affected, what to do

Electron is a framework for writing cross-platform desktop applications using JavaScript, HTML and CSS. Prior to 41.10.6, 42.9.2, 43.4.1, and 44.0.0-beta.5, an Electron <webview> guest could enable nodeIntegrationInWorker for its Web Workers even when the unsandboxed embedder had Node.js integration disabled, allowing untrusted guest content to create a Node-enabled worker with more privilege than the embedder granted.

Update Electron to version 41.10.6.

Affected: Electron gte 42.0.0-alpha.1, < 42.9.2..*
Electron lt *..41.10.6
Fixed in: Electron 41.10.6

Not sure whether and how you are affected? Ask a question about this vulnerability

Metrics

9.8

Priority

XIEM Effective CVSS: highest available CVSS rating from NVD and vendor data.

Source: NVD, CVSS v3

8.3

CVSS v3

Severity High on the scale from 0 to 10.

Source: CVE.org, OSV, Hersteller

0.5 %

EPSS score

Low — model estimates < 1% exploitation likelihood.

Source: FIRST EPSS, percentile 41.3

Show all metrics

Severity: Critical
Priority (0–325) The priority score is a consolidated metric that condenses several individual signals into a single, action-guiding ranking: technical severity (CVSS), exploitation likelihood (EPSS), known-exploited status (KEV) and the context of the affected asset. The aim is to answer the only truly important question in vulnerability management: what first? Read in glossary: 84.20 Methodology
Exploit maturity An exploit is code or a technique that specifically uses a concrete vulnerability to force unintended behaviour — such as executing code or escalating privileges. It is the tool that turns a theoretical flaw into a practical attack. Read in glossary: no public PoC known
XIEM Effective CVSS XIEM® is the tiered managed-security operating model from NEOSEC and a registered trademark of NEOSEC GmbH. It extends classic SIEM — the central collection, normalisation and correlation of security-relevant events — with endpoint forensics, network visibility and deception technology, and consolidates them into three building tiers: Sentry, Orchestrate and Command. Read in glossary: 9.8 Methodology
CVSS v3 CVSS is the globally established, open standard for assessing the technical severity of a vulnerability on a scale from 0 to 10. It describes how easily a flaw can be exploited and what damage it can cause — but not how likely its actual exploitation is. CVSS and the complementary EPSS deliberately answer different questions. Read in glossary: 8.3
EPSS score The EPSS score is the absolute model output for an individual vulnerability: the estimated probability of real-world exploitation within the next 30 days, expressed as a value between 0 and 1 (i.e. 0 % to 100 %). A score of 0.42 means „the model estimates a 42 % chance of real-world exploitation within 30 days“. Read in glossary: 0.5 %; Low — model estimates < 1% exploitation likelihood.
EPSS percentile The EPSS percentile is the relative position of a vulnerability within all EPSS-scored CVEs, expressed as a value between 0 and 1. A percentile of 0.90 means „this CVE has a higher EPSS score than 90 % of all other scored CVEs“. Unlike the EPSS score, it is not a probability — but a positioning within a ranking. Read in glossary: 41.3; High — this CVE ranks above the median of all CVEs scored today (rank ≥ 36%).
KEV status The KEV catalogue is a list maintained by the US authority CISA of vulnerabilities for which active exploitation in the wild has been confirmed. It answers not the question „how severe?“ but „is it already being attacked?“ — thereby sharply prioritising patching. Read in glossary: —
Published: 29.09.2026
CISA assessment (SSVC): Exploitation: none known · not automatable · Technical impact: total; Source: CISA Vulnrichment, as of 29 September 2026
CWE CWE is a catalogue of typical weakness types in software and hardware — such as flawed input validation, unsafe memory handling or poor authentication. Where a CVE names a concrete vulnerability in a concrete product, a CWE describes the underlying class of defect. Read in glossary: CWE-269, CWE-1188

Detection rules

No NEOSEC detection rule is available for this vulnerability yet.

Classification under NIS2 and CRA

Rule-based classification from exploitation status and severity. It does not replace a case-by-case assessment.

NIS2 NIS2 is EU Directive (EU) 2022/2555 to raise the level of cybersecurity across the Union. It substantially broadens obligations compared with the first NIS directive: more sectors, mandatory risk management, staged reporting duties and personal accountability of senior management. Read in glossary: High technical severity: assess and remediate the vulnerability in vulnerability handling under Art. 21(2)(e) NIS2 and document the decision.
CRA The CRA is EU Regulation (EU) 2024/2847 setting horizontal cybersecurity requirements for „products with digital elements“ — from industrial controllers and software to connected consumer devices. For the first time manufacturers must ensure security across the entire product lifecycle, handle vulnerabilities and provide security updates. Read in glossary: From 11.12.2027, Annex I Part II CRA requires manufacturers of affected products with digital elements to handle vulnerabilities without delay and provide security updates.
ISO/IEC 27001 ISO/IEC 27001 is the internationally leading standard for an information security management system (ISMS). It describes a risk-based, process-oriented framework to systematically plan, implement, review and improve information security. Read in glossary: Control A.8.8, management of technical vulnerabilities: assess relevance to your systems, plan remediation and keep evidence.

Description

Source: cvelistv5, NVD (NIST), OSV (Open Source Vulnerabilities), GitHub Security Advisories

Affected products

The following versions are affected. Older releases of the same product line are also vulnerable unless stated otherwise.

Affected products
		Affected versions	Fixed in
electron	electron	`< 41.10.6` `≥ 42.0.0-alpha.1, < 42.9.2`	`41.10.6` —
electronjs	electron	`44.0.0` `< 41.10.6` `42.0.0 – < 42.9.2` `43.0.0 – < 43.4.1`	— `41.10.6` `42.9.2` `43.4.1`

Vendors and products

Weakness classes (CWE)

CWE-269Improper Privilege Management
Class
The product does not properly assign, modify, track, or check privileges for an actor, creating an unintended sphere of control for that actor.
Entry at MITRE CWE-269
CWE-1188Initialization of a Resource with an Insecure Default
Base
The product initializes or sets a resource with a default that is intended to be changed by the product's installer, administrator, or maintainer, but the default is not secure.
Entry at MITRE CWE-1188

References & sources

github.comelectron/electron/security/advisories/GHSA-9qh4-3jw8-366wx_refsource_CONFIRM
github.comelectron/electron/commit/6462a2e1dc4e6adffd3b7d9b9be1474c45dcbb…x_refsource_MISC
github.comelectron/electron/commit/9a675aef8822bae4088567822969f900b3a376…x_refsource_MISC
github.comelectron/electron/commit/b3ae0aab5cf81c2ed03d04df1ae8e69ecfab78…x_refsource_MISC
github.comelectron/electron/commit/cd34f335c8664613db5b6e61ae51e2e1846233…x_refsource_MISC
github.comelectron/electron/releases/tag/v41.10.6x_refsource_MISC
github.comelectron/electron/releases/tag/v42.9.2x_refsource_MISC
github.comelectron/electron/releases/tag/v43.4.1x_refsource_MISC
github.comelectron/electron/releases/tag/v44.0.0-beta.5x_refsource_MISC
github.comelectron/electronpackage

Changes to this CVE

Who changed this CVE and when: NVD (analysis, affected products, CVSS), the CVE publisher (CNA) and additional providers such as CISA (ADP).

15.10.2026Initial analysis by NVDNVD

Newly listed as affected:

HackerOne electron node module (before 41.10.6; 42.0.0 – before 42.9.2; 43.0.0 – before 43.4.1; 13 individual versions)

CVSS V3.1: AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

New references:

and 5 more references

Show 11 original changes

Individual changes of this event as published by NVD
Type	Action	Before	After
CVSS	added	—	AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Product configuration	added	—	OR cpe:2.3:a:electronjs:electron::::::node.js:: versions up to (excluding) 41.10.6 cpe:2.3:a:electronjs:electron::::::node.js:: versions from (including) 42.0.0 up to (excluding) 42.9.2 cpe:2.3:a:electronjs:electron::::::node.js:: versions from (including) 43.0.0 up to (excluding) 43.4.1 cpe:2.3:a:electronjs:electron:44.0.0:alpha1::::node.js:: cpe:2.3:a:electronjs:electron:44.0.0:alpha2::::node.js:: cpe:2.3:a:electronjs:electron:44.0.0:alpha3::::node.js:: cpe:2.3:a:electronjs:electron:44.0.0:alpha4::::node.js:: cpe:2.3:a:electronjs:electron:44.0.0:alpha5::::node.js:: cpe:2.3:a:electronjs:electron:44.0.0:alpha6::::node.js:: cpe:2.3:a:electronjs:electron:44.0.0:alpha7::::node.js:: cpe:2.3:a:electronjs:electron:44.0.0:alpha8::::node.js:: cpe:2.3:a:electronjs:electron:44.0.0:alpha9::::node.js:: cpe:2.3:a:electronjs:electron:44.0.0:beta1::::node.js:: cpe:2.3:a:electronjs:electron:44.0.0:beta2::::node.js:: cpe:2.3:a:electronjs:electron:44.0.0:beta3::::node.js:: cpe:2.3:a:electronjs:electron:44.0.0:beta4::::node.js::
Reference type	added	—	GitHub, Inc.: https://github.com/electron/electron/commit/6462a2e1dc4e6adffd3b7d9b9be1474c45dcbbe2 Types: Patch
Reference type	added	—	GitHub, Inc.: https://github.com/electron/electron/commit/9a675aef8822bae4088567822969f900b3a37671 Types: Patch
Reference type	added	—	GitHub, Inc.: https://github.com/electron/electron/commit/b3ae0aab5cf81c2ed03d04df1ae8e69ecfab7886 Types: Patch
Reference type	added	—	GitHub, Inc.: https://github.com/electron/electron/commit/cd34f335c8664613db5b6e61ae51e2e1846233ae Types: Patch
Reference type	added	—	GitHub, Inc.: https://github.com/electron/electron/releases/tag/v41.10.6 Types: Release Notes
Reference type	added	—	GitHub, Inc.: https://github.com/electron/electron/releases/tag/v42.9.2 Types: Release Notes
Reference type	added	—	GitHub, Inc.: https://github.com/electron/electron/releases/tag/v43.4.1 Types: Release Notes
Reference type	added	—	GitHub, Inc.: https://github.com/electron/electron/releases/tag/v44.0.0-beta.5 Types: Release Notes
Reference type	added	—	GitHub, Inc.: https://github.com/electron/electron/security/advisories/GHSA-9qh4-3jw8-366w Types: Vendor Advisory

Source identifier: nvd@nist.gov

29.09.2026Record modifiedCISA ADP

CISA assessment (SSVC): exploitation: none known, automatable: no

Show the original change

Individual changes of this event as published by NVD
Type	Action	Before	After
SSVC assessment	added	—	{"id":"CVE-2026-102676","role":"CISA Coordinator","options":[{"exploitation":"none"},{"automatable":"no"},{"technicalImpact":"total"}],"version":"2.0.3","timestamp":"2026-09-29T19:50:13.282220Z"}

Source identifier: 134c704f-9b21-4f2e-91b3-4a467353bcc0

29.09.2026ReceivedGitHub

CVSS V3.1: AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:H

Weakness type: CWE-1188, CWE-269

Description added or changed

New references:

and 5 more references

Show 14 original changes

Individual changes of this event as published by NVD
Type	Action	Before	After
Description	added	—	Electron is a framework for writing cross-platform desktop applications using JavaScript, HTML and CSS. Prior to 41.10.6, 42.9.2, 43.4.1, and 44.0.0-beta.5, an Electron <webview> guest could enable nodeIntegrationInWorker for its Web Workers even when the unsandboxed embedder had Node.js integration disabled, allowing untrusted guest content to create a Node-enabled worker with more privilege than the embedder granted. Applications that do not enable the <webview> tag or that keep the embedder sandboxed are not affected. This issue is fixed in versions 41.10.6, 42.9.2, 43.4.1, and 44.0.0-beta.5.
CVSS	added	—	AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:H
Weakness type (CWE)	added	—	CWE-1188
Weakness type (CWE)	added	—	CWE-269
Affected versions (publisher)	added	—	New affected value received. <a href="https://github.com/CVEProject/cvelistV5/blob/main/cves/2026/102xxx/CVE-2026-102676.json">CVE-2026-102676</a>
Reference	added	—	https://github.com/electron/electron/commit/6462a2e1dc4e6adffd3b7d9b9be1474c45dcbbe2
Reference	added	—	https://github.com/electron/electron/commit/9a675aef8822bae4088567822969f900b3a37671
Reference	added	—	https://github.com/electron/electron/commit/b3ae0aab5cf81c2ed03d04df1ae8e69ecfab7886
Reference	added	—	https://github.com/electron/electron/commit/cd34f335c8664613db5b6e61ae51e2e1846233ae
Reference	added	—	https://github.com/electron/electron/releases/tag/v41.10.6
Reference	added	—	https://github.com/electron/electron/releases/tag/v42.9.2
Reference	added	—	https://github.com/electron/electron/releases/tag/v43.4.1
Reference	added	—	https://github.com/electron/electron/releases/tag/v44.0.0-beta.5
Reference	added	—	https://github.com/electron/electron/security/advisories/GHSA-9qh4-3jw8-366w

Source identifier: security-advisories@github.com

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