CVE-2026-43941: Electerm Project Electerm

Critical severity, CVSS 9.6. EPSS: 0.5% chance of exploitation in the next 30 days.

electerm is an open-sourced terminal/ssh/sftp/telnet/serialport/RDP/VNC/Spice/ftp client. In versions 3.8.15 and prior, Electerm's terminal hyperlink handler passes any URL clicked in the terminal directly to shell.openExternal without any protocol validation. An attacker who controls terminal output (e.g., via a malicious SSH server, compromised remote host, or malicious plugin rendering terminal content) can thus achieve arbitrary code execution or local file access on the victim's machine, requiring only that the victim clicks a displayed link. At time of publication, there are no publicly available patches.

Affected products

• Electerm Project Electerm: up to and including 3.8.15

Published 2026-05-08. Last modified 2026-06-17.