electerm up to 3.8.15 IPC src/app/lib/ipc-sync.js getConstants information disclosure

Summaryinfo

A vulnerability categorized as problematic has been discovered in electerm up to 3.8.15. This issue affects the function getConstants in the library src/app/lib/ipc-sync.js of the component IPC Handler. The manipulation results in information disclosure. This vulnerability is reported as CVE-2026-43942. The attack requires a local approach. No exploit exists.

Detailsinfo

A vulnerability, which was classified as problematic, was found in electerm up to 3.8.15. Affected is the function getConstants in the library src/app/lib/ipc-sync.js of the component IPC Handler. The manipulation with an unknown input leads to a information disclosure vulnerability. CWE is classifying the issue as CWE-200. The product exposes sensitive information to an actor that is not explicitly authorized to have access to that information. This is going to have an impact on confidentiality. CVE summarizes:

electerm is an open-sourced terminal/ssh/sftp/telnet/serialport/RDP/VNC/Spice/ftp client. In versions 3.8.15 and prior, the getConstants() IPC handler in src/app/lib/ipc-sync.js serialises the entire process.env object and sends it to the renderer. The data is stored as window.pre.env and is accessible from any JavaScript running in the renderer (e.g., via the DevTools console or a compromised webview context). An attacker who achieves any JavaScript execution within the renderer can trivially exfiltrate these secrets to a remote server, leading to cloud account compromise, supply chain attacks, and lateral movement. At time of publication, there are no publicly available patches.

The advisory is shared for download at github.com. This vulnerability is traded as CVE-2026-43942 since 05/04/2026. The exploitability is told to be easy. The attack needs to be approached locally. There are known technical details, but no exploit is available. The MITRE ATT&CK project declares the attack technique as T1592.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

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Productinfo

Name

• electerm

Version

• 3.8.0
• 3.8.1
• 3.8.2
• 3.8.3
• 3.8.4
• 3.8.5
• 3.8.6
• 3.8.7
• 3.8.8
• 3.8.9
• 3.8.10
• 3.8.11
• 3.8.12
• 3.8.13
• 3.8.14
• 3.8.15

Website

• Product: https://github.com/electerm/electerm/

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