---
id: CVE-2026-73226
title: >-
  electerm is an open-sourced
  terminal/ssh/sftp/telnet/serialport/RDP/VNC/Spice/ftp client
summary: >-
  electerm is an open-sourced
  terminal/ssh/sftp/telnet/serialport/RDP/VNC/Spice/ftp client. Prior to
  3.15.186, electerm allows an authenticated WebSocket client to invoke
  unintended internal functions through client-controlled func values …
severity: high
cvss: 8.8
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H'
cwe:
  - CWE-913
published: '2026-08-11'
updated: '2026-09-09'
sourceUpdated: '2026-09-09T20:55:04.493'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-73226'
references:
  - url: >-
      https://github.com/electerm/electerm/commit/b1729eb67a4cd9cf1182de69dc2c8e051931740f
    label: security-advisories@github.com
  - url: 'https://github.com/electerm/electerm/pull/4447'
    label: security-advisories@github.com
  - url: 'https://github.com/electerm/electerm/releases/tag/v3.15.186'
    label: security-advisories@github.com
  - url: >-
      https://github.com/electerm/electerm/security/advisories/GHSA-8chw-jwc5-8587
    label: security-advisories@github.com
tags:
  - nvd
epss: 0.00751
epssPercentile: 0.52955
ingestedAt: '2026-09-09T21:22:45.529Z'
---

## Overview

electerm is an open-sourced terminal/ssh/sftp/telnet/serialport/RDP/VNC/Spice/ftp client. Prior to 3.15.186, electerm allows an authenticated WebSocket client to invoke unintended internal functions through client-controlled func values in upgrade-func in src/app/server/dispatch-center.js and handleFs in src/app/server/fs.js, exposing Upgrade and fsExport methods that can execute commands, open files, mutate the filesystem, or terminate the process. This issue is fixed in version 3.15.186.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.