Electron: <webview> can enable Node.js integration in Web Workers despite embedder restrictions
Published Sep 29, 2026
8.3
HIGHCVSS 3.1
EPSS 0.45%
Description
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.
Affected products
-
- Version < 41.10.6StatusaffectedConstraints-
- Version >= 42.0.0-alpha.1, < 42.9.2StatusaffectedConstraints-
- Version >= 43.0.0-alpha.1, < 43.4.1StatusaffectedConstraints-
- Version >= 44.0.0-alpha.1, < 44.0.0-beta.5StatusaffectedConstraints-
- Version
Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).
No data.
No data.
Red Hat Build of Podman Desktop
rh-podman-desktop
Affected
Red Hat Enterprise Linux 10
podman-desktop
Affected
Red Hat Enterprise Linux 10
rh-podman-desktop
Affected
| Product | Package | State | Advisory |
|---|---|---|---|
| Red Hat Build of Podman Desktop | rh-podman-desktop | Affected | n/a |
| Red Hat Enterprise Linux 10 | podman-desktop | Affected | n/a |
| Red Hat Enterprise Linux 10 | rh-podman-desktop | Affected | n/a |
electron
npm
Introduced 42.0.0-alpha.1 Fixed 42.9.2electron
npm
Introduced 43.0.0-alpha.1 Fixed 43.4.1electron
npm
Introduced 44.0.0-alpha.1 Fixed 44.0.0-beta.5electron
npm
Introduced 0 Fixed 41.10.6
| Ecosystem | Package | Introduced | Fixed |
|---|---|---|---|
| npm | electron | 42.0.0-alpha.1 | 42.9.2 |
| npm | electron | 43.0.0-alpha.1 | 43.4.1 |
| npm | electron | 44.0.0-alpha.1 | 44.0.0-beta.5 |
| npm | electron | 0 | 41.10.6 |
Remediation
Red Hat statement
A flaw was found in Electron where an embedded <webview> guest can enable nodeIntegrationInWorker for background Web Workers even when Node.js integration is disabled in the unsandboxed embedder. Untrusted guest content loaded inside a web view can exploit this behavior to spawn a Node-enabled worker, bypassing host security restrictions to achieve privilege escalation and arbitrary code execution within the context of the host application process.
Red Hat mitigation
Disable the <webview> tag in application configurations or ensure the host embedder process remains strictly sandboxed.
Metrics
No CVSS v4.0 score for this CVE.
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:H
No CVSS v3.0 score for this CVE.
No CVSS v2.0 score for this CVE.
This CVE is not in the KEV list.
CISA SSVC (Vulnrichment)
Stakeholder-Specific Vulnerability Categorization from CISA ADP.
Exploitation
NoneAutomatable
NoTechnical Impact
TotalDecision
n/aAssessed Sep 29, 2026 · SSVC 2.0.3
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.
Score over time
Not enough EPSS history yet for a chart. At least two recorded scores are needed.
Percentile over time
Not enough EPSS history yet for a chart. At least two recorded scores are needed.
References (14)
- https://access.redhat.com/security/cve/CVE-2026-102676 Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=2543319 Issue Tracking
- https://github.com/advisories/GHSA-9qh4-3jw8-366w Advisory
- https://github.com/electron/electron/commit/6462a2e1dc4e6adffd3b7d9b9be1474c45dcbbe2 x_refsource_MISC
- https://github.com/electron/electron/commit/9a675aef8822bae4088567822969f900b3a37671 x_refsource_MISC
- https://github.com/electron/electron/commit/b3ae0aab5cf81c2ed03d04df1ae8e69ecfab7886 x_refsource_MISC
- https://github.com/electron/electron/commit/cd34f335c8664613db5b6e61ae51e2e1846233ae x_refsource_MISC
- https://github.com/electron/electron/releases/tag/v41.10.6 x_refsource_MISC
- https://github.com/electron/electron/releases/tag/v42.9.2 x_refsource_MISC
- https://github.com/electron/electron/releases/tag/v43.4.1 x_refsource_MISC
- https://github.com/electron/electron/releases/tag/v44.0.0-beta.5 x_refsource_MISC
- https://github.com/electron/electron/security/advisories/GHSA-9qh4-3jw8-366w x_refsource_CONFIRM
- https://nvd.nist.gov/vuln/detail/CVE-2026-102676
- https://www.cve.org/CVERecord?id=CVE-2026-102676
Change history (0)
No recorded changes yet.