# Electron: \<webview> can enable Node.js integration in Web Workers despite embedder restrictions

Advisory record · `GHSA-9qh4-3jw8-366w`

- **Identifiers:** `GHSA-9qh4-3jw8-366w` · `CVE-2026-102676`
- **State:** Confirmed
- **Severity:** CVSS 8.3 High
- **Critical:** No
- **Weakness (CWE):** [CWE-269](https://cwe.mitre.org/data/definitions/269.html) · [CWE-1188](https://cwe.mitre.org/data/definitions/1188.html)
- **Tags:** [Privilege escalation](https://agentprime.io/advisories/tag/privilege-escalation.md) · [CWE-1188](https://agentprime.io/advisories/tag/cwe-1188.md)
- **Published:** 29 Sept 2026
- **Updated:** 29 Sept 2026
- **Reviewed by a person:** No

Published by the GitHub Advisory Database at 29 Sept 2026, 18:02 UTC. agentprime has not analysed this yet, so whether it affects any app is not known.

## Affected packages

- `electron` (npm): affected `<41.10.6 || >=42.0.0-alpha.1, <42.9.2 || >=43.0.0-alpha.1, <43.4.1 || >=44.0.0-alpha.1, <44.0.0-beta.5`; fixed in `41.10.6`, `42.9.2`, `43.4.1`, `44.0.0-beta.5`

## Not analysed yet

We haven’t published our analysis of this Advisory yet. Once a person has reviewed it, this page will say what’s vulnerable, what has to be true for your app to be affected, and how to check.

## Severity and exploitation

- 8.3 High, CVSS 3.1: `CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:H`, from CNA (GitHub_M)

- **CISA KEV:** Not listed.
- **EPSS:** 0.0048, the 41st percentile, on 5 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

## Timeline

- 31 Oct 2026, 13:34 UTC: First seen by agentprime
- 31 Oct 2026, 13:34 UTC: [Confirmed by OSV](https://osv.dev/vulnerability/GHSA-9qh4-3jw8-366w)

## Sources

- [GitHub Advisory Database: GHSA-9qh4-3jw8-366w](https://github.com/advisories/GHSA-9qh4-3jw8-366w)
- [OSV: GHSA-9qh4-3jw8-366w](https://osv.dev/vulnerability/GHSA-9qh4-3jw8-366w)
- <https://github.com/electron/electron/security/advisories/GHSA-9qh4-3jw8-366w>
- <https://github.com/electron/electron/commit/6462a2e1dc4e6adffd3b7d9b9be1474c45dcbbe2>
- <https://github.com/electron/electron/commit/9a675aef8822bae4088567822969f900b3a37671>
- <https://github.com/electron/electron/commit/b3ae0aab5cf81c2ed03d04df1ae8e69ecfab7886>
- <https://github.com/electron/electron/commit/cd34f335c8664613db5b6e61ae51e2e1846233ae>
- <https://github.com/electron/electron>
- <https://github.com/electron/electron/releases/tag/v41.10.6>
- <https://github.com/electron/electron/releases/tag/v42.9.2>
- <https://github.com/electron/electron/releases/tag/v43.4.1>
- <https://github.com/electron/electron/releases/tag/v44.0.0-beta.5>

Facts on this page come from the GitHub Advisory Database (CC-BY 4.0), OSV and the other sources listed, as published. We don’t reproduce full advisory descriptions, which can contain exploit code.

## Check whether this affects you

A Match means an installed version is in the affected range above. Most don’t affect the app; agentprime hasn’t analysed this one yet.

- With the agentprime MCP server (<https://api.agentprime.io/mcp>), ask your agent to check the project: `check_lockfile` sends a lockfile, `check_packages` a list of installed packages, and both return the Matches and the upgrades that clear them. `get_advisory` returns this record. Setup: <https://agentprime.io/mcp.md>
- In a browser: <https://agentprime.io/check/> reads your lockfile in the browser, never uploading it.
- Whether it touches your code, with file and line: the Claude Code plugin, <https://agentprime.io/plugin.md>
- As JSON: <https://api.agentprime.io/v1/advisories/GHSA-9qh4-3jw8-366w>, or `POST https://api.agentprime.io/v1/match` with your packages (<https://agentprime.io/api.md>)

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The web page: <https://agentprime.io/advisories/GHSA-9qh4-3jw8-366w/>. Everything for agents: <https://agentprime.io/llms.txt>.