CVE-2026-43941 Details
Description
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.
A vulnerability in Electerm's terminal hyperlink handler allows arbitrary code execution and local file access. In versions through 3.8.15, the hyperlink handler passes clicked URLs directly to shell.openExternal without validating the protocol. This flaw can be exploited by an attacker controlling terminal output, such as through a malicious SSH server or compromised remote host. The exploitation requires the victim to click a displayed link. At the time of publication, no patches are available.
Until a patch is released, users should avoid clicking links in the terminal when connected to untrusted servers. It is also advisable to disable hyperlink rendering in Electerm's terminal settings, use a terminal multiplexer like tmux that filters URI schemes, or run Electerm in a restricted environment that limits protocol handler execution.
Metrics
CVSS 4.0 Severity and Vector Strings:
No CVSS 4.0 data is available for this CVE.
CVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
CISA-ADP
Assessed May 8, 2026References to Advisories, Solutions, and Tools
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| URL | Source(s) | Tag(s) |
|---|---|---|
| https://github.com/electerm/electerm/security/advisories/GHSA-fwf6-j56g-m97c | [email protected] | MitigationVendor Advisory |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-601 | URL Redirection to Untrusted Site ('Open Redirect') | [email protected] |
| CWE-88 | Improper Neutralization of Argument Delimiters in a Command ('Argument Injection') | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| electerm project electerm | <= 3.8.15 |
CPE
Remediation
| |
Change History
4 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Jun 17, 2026 | CVE Modified | [email protected] |
| Jun 17, 2026 | CVE Modified | CISA-ADP |
| May 8, 2026 | Initial Analysis | [email protected] |
| May 8, 2026 | New CVE Received | [email protected] |