CVE-2026-43941
CRITICALUnvalidated shell.openExternal in electerm allows arbitrary protocol execution via terminal link click
Title source: cnaDescription
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.
References (1)
Core 1
Core References
X_Refsource_Confirm x_refsource_confirm
https://github.com/electerm/electerm/security/advisories/GHSA-fwf6-j56g-m97c
Scores
CVSS v3
9.6
EPSS
0.0002
EPSS Percentile
6.2%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H
CISA SSVC
Vulnrichment
Exploitation
none
Automatable
no
Technical Impact
total
Details
CWE
CWE-601
CWE-88
Status
published
Products (3)
electerm/electerm
<= 3.8.15
electerm_project/electerm
< 3.8.15
npm/electerm
0 - 3.8.15npm
Published
May 08, 2026
Tracked Since
May 08, 2026