Arbitrary Command Execution Vulnerability in Electerm Open-Source SSH Client
CVE-2026-49255

8.8HIGH

Key Information:

Vendor

Electerm

Status
Electerm
Vendor
CVE Published:
19 August 2026

What is CVE-2026-49255?

Electerm, an open-source terminal client, suffers from a vulnerability where untrusted file paths are interpolated into critical operational commands in its codebase. This flaw can be exploited by malicious SSH or SFTP servers that send crafted filenames containing shell metacharacters, leading to arbitrary command execution on both POSIX and Windows systems. This could result in serious security issues including data exfiltration, unauthorized file modifications, and potential malware installation. The issue is resolved in version 3.11.11.

Affected Version(s)

electerm < 3.11.11

References

https://github.com/electerm/electerm/security/advisories/...
x_refsource_CONFIRM
https://github.com/electerm/electerm/commit/aa778818843b9...
x_refsource_MISC
https://github.com/electerm/electerm/releases/tag/v3.11.11
x_refsource_MISC

CVSS V3.1

Score:
8.8
Severity:
HIGH
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
Required
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.