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GHSA-v5ff-xmfp-p245

HighCVSS 8.8 / 10
Published Jul 2, 2026·Last modified Jul 2, 2026
Affected Components(0)

No affected components available

Description

Impact

A command injection vulnerability exists in electerm's file system operations (rmrf, mv, cp) in src/app/lib/fs.js. These functions construct shell commands by interpolating file paths directly into command strings without escaping shell metacharacters.

Vulnerable functions:

  • rmrf() - Uses rm -rf "${path}" (double quotes, vulnerable to " injection)
  • mv() - Uses mv '${from}' '${to}' (single quotes, vulnerable to ' injection)
  • cp() - Uses cp -r "${from}" "${to}" (double quotes, vulnerable to " injection)

Attack scenario:

  1. Attacker controls a malicious SSH/SFTP server
  2. Server lists files with shell metacharacters in names (e.g., file"$(touch /tmp/pwned)")
  3. Victim connects to the server and performs file operations (remote-to-local transfer, rename on conflict, etc.)
  4. The malicious filename is passed to rmrf(), mv(), or cp() without sanitization
  5. Shell metacharacters break out of the quoted argument and execute arbitrary commands

Impact includes:

  • Arbitrary command execution as the electerm desktop user
  • Data exfiltration, malware installation, or system compromise
  • Both POSIX (bash) and Windows (PowerShell) platforms are affected

Patches

  • https://github.com/electerm/electerm/commit/aa778818843b9c083bd711cd04644d102fcb5a42

Workarounds

If upgrading is not immediately possible, users can mitigate this vulnerability by:

  1. Only connecting to trusted SSH/SFTP servers
  2. Avoiding remote-to-local file transfers from untrusted sources
  3. Not using the "rename on conflict" option when downloading folders from untrusted servers
  4. Manually verifying filenames before performing file operations
Risk Scores
Base Score
8.8

The vulnerability can be exploited over the network without needing physical access. It is easy for an attacker to exploit this vulnerability. An attacker does not need any special privileges or access rights. The attacker needs the user to perform some action, like clicking a link. The impact is confined to the system where the vulnerability exists. There is a high impact on the confidentiality of the information. There is a high impact on the integrity of the data. There is a high impact on the availability of the system.

Threat Intelligence
8.1

Exploitation activity has been observed. Apply available patches or mitigations urgently.

EPSS
N/A

Probability that this vulnerability will be exploited in the wild within the next 30 days.

Exploit
Not available

We did not find any exploit available. Neither in GitHub repositories nor in the Exploit-Database.

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High severity
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