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CVE-2026-43941— Unvalidated shell.openExternal in electerm allows arbitrary protocol execution via terminal link click

Quick assessment

Affected
electerm electerm
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Electerm是中国zxdong262个人开发者的一款基于 electron 开发的 SSH/SFTP 客户端。 Electerm 3.8.15及之前版本存在参数注入漏洞，该漏洞源于终端超链接处理器未对URL进行协议验证，可能导致攻击者通过恶意SSH服务器或远程主机控制终端输出，实现任意代码执行或本地文件访问。

CVSS 9.6 · Critical EPSS 0.39% · P32

Affected Version Matrix 1

VendorProduct Version RangeStatus
electerm electerm <= 3.8.15 affected
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I. Basic Information for CVE-2026-43941

Vulnerability Information
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Vulnerability Title
Unvalidated shell.openExternal in electerm allows arbitrary protocol execution via terminal link click
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
参数注入或修改
Source: CVE Program / CVE List V5
Vulnerability Title
Electerm 参数注入漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Electerm是中国zxdong262个人开发者的一款基于 electron 开发的 SSH/SFTP 客户端。 Electerm 3.8.15及之前版本存在参数注入漏洞，该漏洞源于终端超链接处理器未对URL进行协议验证，可能导致攻击者通过恶意SSH服务器或远程主机控制终端输出，实现任意代码执行或本地文件访问。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
electerm electerm <= 3.8.15 -

II. Public POCs for CVE-2026-43941

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III. Intelligence Information for CVE-2026-43941

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Vendor Advisories for CVE-2026-43941 (1)

Same Patch Batch · electerm · 2026-05-08 · 7 CVEs total

CVE-2026-41501 9.8 CRITICAL electerm has Command Injection Vulnerability via runLinux function
CVE-2026-41500 9.8 CRITICAL electerm has Command Injection Vulnerability via runMac function
CVE-2026-43940 8.4 HIGH electerm: Path traversal in electerm runWidget leads to arbitrary code execution
CVE-2026-43943 7.8 HIGH electerm: RCE via malicious SSH server filename in openFileWithEditor
CVE-2026-43942 5.5 MEDIUM electerm: Full process.env exposed to renderer via window.pre.env in electerm
CVE-2026-43944 electerm: dangerous code can be run through links or command line

IV. Related Vulnerabilities

Same product: electerm
Same vendor: electerm
Same weakness: CWE-88

V. Comments for CVE-2026-43941

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