electerm has Path Traversal in Zmodem and Trzsz Download Filename Handling

Description

A path traversal vulnerability exists in the Zmodem and Trzsz file download handlers in electerm. When receiving files via Zmodem or Trzsz protocols, electerm uses the remote-supplied filename directly in path.join() with the user-selected download directory without sanitization.

Recommendation

Update the electerm package to the latest compatible version. Followings are version details:

• Affected version(s): <= 3.11.0
• Patched version(s): 3.11.11

References

• GHSA-38j7-23hf-9mhc
• CVE-2026-49253
• CWE-22
• CAPEC-310
• OWASP 2021-A1
• OWASP 2021-A6

Related Issues

• Electerm runWidget has a path traversal that leads to arbitrary code execution - CVE-2026-43940
• i18next-http-backend has Path Traversal & URL Injection via Unsanitised lng/ns - CVE-2026-41691
• SillyTavern has a Path Traversal issue - CVE-2026-44650
• Saltcorn has an Unauthenticated Path Traversal in sync endpoints, allowing arbitrary file write and directory read - CVE-2026-40163

You might also like:

Apache and Express Path Traversal plus Nginx Restriction Bypass Tests with SmartScanner

10 Secure Coding Best Practices to Follow in Every Project

Update Cheat Sheet for Developers

Tags:

npm

electerm